I finally got some cash together, and was able to pay to upgrade to my full licence today. I mainly did it because I've been pillioning a bit lately, and I don't want to have to worry about getting caught any more, and also I'll be driving about 200km's this weekend, mostly freeways, so I'd like to be able to do 110. Out of the blue, a mate called up this arvo and asked if he could come visit- a mate who owns a Suzuki Rf600. For the uninformed, the Rf600 was Suzuki's sporting 600 back in the early 90's. It makes 100hp (in a brouchure, actually more like 80hp at the rear wheel). So I took it out for a spin. The power!! Now I know how god must feel when he rides a powerfull bike I'm used to being able to use full throttle, for at least a few seconds whenever a decent straight appears, but this thing was just insane. I never got it fully cranked open. You apply throttle in any gear and it will rocket you into tomorrow. These things have way too much power for the street. This isn't even a newer model, but it's still insane. I absolutely agree with restrictions for L and P platers having ridden this. Without a few months or years riding experience, you would get seriously hurt riding one of these things. Even if you have some experience, you need a lot of maturity to be able to know your limits when riding something like this, and to not push them. It's true what they say about sports 600's- no low down power. Roll the throttle on from 3000rpm and its much less responsive than my SZR660 (single cylinder grunt). However once the revs start to rise- watch out!! 5000rpm onwards is very quick acceleration. I didn't go past much more than 8000rpm- I mentioned this to my friend and he said that's where the real power is just starting. Between 10-13000 it's wild apparently. It's rediculous, because redline in first gear is 80km/h, so there's no way you can ever use all of the available power on the street. Having said it has no low down power, they are very smooth, even running barely above idle, and will pull from as low as 3000rpm comfortably with no hesitation. It's just not arm tearingly quick in that range. A very easy engine to use, if you watch your throttle hand you'll have no problems. Compared to my cramped single cylinder bike, the ride was super-smooth, such a comfortable, vibration free ride, and the large riding position was so luxurious- SZR660's really are nightmarishly uncomfortable compared to this. It is so stable, and very composed in corners. However the downside to this stability is it is much less flickable, and a lot more awkward through roundabouts and slow speed manouvering. The biggest challenge for me was changing from a single cylinder to an inline-four. The single has huge engine braking- I roll off the throttle, or change down a gear and my bike slows the fcuk down. My engine braking is actually much stronger than my conventional brakes (although possibly my brakes need a service ). On the Rf600 I was hurtling towards an intersection and rolled off the throttle, expecting to slow down- and got no slower in return. These things have no engine braking. Thankfully its brakes are hugely powerfull and pulled us up easy. Just a different riding style is required obviously. In the end, I loved the smoothness, and great stable ride. I can't wait till I can afford to own something like this. However the power is excessive, and undesirable in a roadbike from my perspective. You have to keep yourself constantly in check, and feed on the minimum of power. There is so much temptation, and it's hard not to use the power. My friend loves the bike, and it's perfect, he's the most sensible rider I know, but even he is worried about the temptation of the power, and has considered selling it for that reason. If you want a smooth, comfortable, good looking ride, then by all means upgrade from your 250. A 600 will do most things easier. However if you find yourself always showing off, challenging others, and being a general hoon on your 250, and you think you'll be tempted to try and use all the power of a 600, then I would recommend you take a look at your attitude and take a little fear with you next time you ride.