I had a quick spin on 08 R6 and 675 today. I rode the R6 for 40min by myself and 675 for 10min with dealer (I also had a dealer with me when riding cbr600rr and 07 R6 previous week, about 10min each as well). Disclaimer, I might be considered a newbie since I've only been riding for 7months. I'll start with engines since that's what every one talks about when comparing this two bikes. I've to say that the engine in 08 R6 has slightly more torque in mid range compared to 07 model. Not a huge amount, but it makes enough difference that I found myself riding at around 4k rpm instead of 6k like in 07. It still feels pretty anaemic compared to 07 CBR600RR that I've rode last week. But once the 08 R6 hits around 8000rpm (I didn't have time to look at the tacho, since I'm a newbie to this speeds on bikes), it starts pulling very hard. I would have to say much harder than 675. Below that range 675 walks all over R6, put it into 6th gear at 60km/h and it pulls away without any effort, lots of torque even at 2k rpm. If I was comparing the bikes only on low end and mid range I would have to rank the 675 as the winner, cbr would come in 3rd and R6 would be last. But even when I had the R6 in 6th gear at 60km/h it might not have pulled as hard as the other 2 bikes, but it got up to speed pretty fast, much faster then my gs500 would in 3rd or even 2nd gear. On the top end the R6 screams, I wasn't able to test the 675 and CBR in that range as much since I was accompanied by the dealer and they were a lot shorter rides. But I would have to say that R6 would win hands down. Exhaust note would have to go to the more grunty 675, but I also liked the R6 ramble at low rpms and it's high pitched scream higher up. All the gearboxes were very smooth, but I really liked the R6 one, neutral is VERY easy to find, nice and smooth clutch-less up shifts and with the slipper clutch the down shifts are super smooth. I think the 08 R6 slipper clutch is a lot smoother than 07. There are no signs of rear tyre lock up and the bike isn't upset at all. All I had to do was load the gearbox lever for down-shift, depress the clutch slightly and then drop it once the lower gear is selected. The clutch makes a nice bang and you are still cruising along without need to rev match etc... Did I say that I love slipper clutch? The only down side is that the R6 clutch feels like an ON/OFF switch. If I want to slip it it's very hard to find the friction point. I should add that it's the only test bike I've stalled at the lights when pulling away for the first time. There's not much to say about the other bikes, their clutch is much easier to work with, but both of them lack slipper clutch, even tough it's easy to rev match, but the slipper clutch made me lazy. As for suspension, I didn't push the bikes hard, not having much experience behind me and forking out between $1000-2000k as a premium I didn't feel like binning the bike. But I've found that the R6 ride was very firm, but not too bad when ridden on Sydney roads. It definitely didn't shake my boobs like few of the cars I've previously owned. The spring was well controlled and it followed all the road imperfections without upsetting the bike and without losing traction. My guess is that the 4 way adjustable suspension helps out a lot on this bike. 675 on the other hand I thought the suspension was crap compared to all the other bikes I've rode, it might have been misconfigured, but from what I've heard it can be a bit of a pain to get the suspension right on this bike. Small pot holes seemed to upset the bike and it had tendency to dive a lot, my uneducated guess was the springs were very soft and under damped, but it didn't feel like a very confidence inspiring ride. The R6 felt like it was on rails compared to 675 boat. But I've to say, the 675 was miles ahead of my gs500. The CBR had nice controlled ride, no real complaints there, but I rode it on very smooth roads at olympic park and it's hard for me to compare it to the other 2. When it comes to ergonomics for reference I should say that I'm 184cm tall, I weight 85kg, a bit more on athletic build side. Comfort wise CBR is the winner by a huge margin, very upright position which is comfy. The only problem I had with it was the lack of leg room and the seating position felt as if I was going to go over handle bars any time. Because of that it was very hard for me to see the instruments. One nice thing that CBR had was a fuel indicator. By the way, for me the leg room is a bit of a deal breaker since I've a dodgy knee and I could especially feel it when I had balls of my feet on the pegs. Another thing that I like about cbr was under emergency braking my legs just slotted into the front fairing and I didn't have to squeeze my legs as hard to keep my weight of handlebars. Now the most uncomfortable one was the R6, the 08 model beign even worse than 07. I think my hands were lower than my knees and considering that R6 has the most leg room out of all the bikes. At least my head was very close to the instrument panel so I could see what speed I was going, very useful considering that it goes to 160 in a blink of an eye (not that I've tried it ). Any one who says that the 675 handbars are low should take 08 R6 for a ride, the 675 feels pretty good and the lean forward isn't too bad. Riding R6 for 40min i could start feel my butt and lower back working hard, but nothing too bad. No such aches and pains on 675, but then I only had it for 10min max. As for seat hight, I'm 184cm (6') and I've been able to flat foot every bike I got on to. 07 R6 wasn't a problem, but the 08 R6 seat must have been raised or something, since my heels were few mm off the ground and my sidi boots have small heels as well! Bringing my feet very close together I was able to flat foot the bike, but it wasn't very comfortable. One thing I should mention when comparing the bikes is the heat, I was riding the bikes in 30C and it's a big factor at this temp. R6's heat from the radiator is pretty bad and I felt it on my left lower leg. My leg felt very hot after the 30min ride. It should be easy to fix by putting something into my perforated boots to deflect the heat. While thinking that the R6 was bad it didn't prepare me for daytona. 675's exhaust could be felt straight after I threw my leg over it, the worst part was that it didn't get any more forgiving at speed. If you have desire to know what a roasted pig's ass has to go through before it gets on the table, ride a daytona. After 10min I was more than glad to get off it. Great bike, but not for nice and warm summer days. I rode the CBR in low 20 degree weather and the exhaust felt slightly warm, but it wasn't too bad. As for build quality, the 675 had a lot more kms than the cbr and r6, but the wear and tear on it was pretty obvious, the build quality isn't as good as the jap bikes. I've to say that the attention to detail on the R6 is slightly higher than CBR, it doesn't feel as plasticy as the other 2 bikes. Also looks are very personal and I like the look of R6 the best, followed by 675 and cbr being the last. One more thing I should mention, when I told the yamaha dealer that I'm going to ride 675 next, he told me that they are fitting 1 tooth smaller front sprocket on Monday and I should come back and ride it one more time before I make up my mind. Final word, which one game me the biggest smile. I have to say it was the CBR, the R6 was close, but with 675 I was thinking about my roasted butt and unnerving suspension. But once the throttle got twisted, the bike gave me big grin as well. Which bike am I going to choose? I've no idea! :?