Which sportsbike do you guys think sounds the best? I originally thought the high-revving f1 sound of the r6/gixxer600 is what i wanted but i had my heart set on the 600rr and am now thinking the throatier mid-range roar of the CBR is quite a sound. I'm not sure what all the rage is with slip-ons, the stock 600rr exhaust has got an even, gentle idle and winds up and howls with a nice mid-to-high-end whistle VS the slip-ons which seem to make the idle bubble away noisily like a lawnmower without much more colour at higher RPMs except maybe decibels and a deeper low end note (which i think the 600rr has plenty of anyway). I do love the way the gixxer/r6s scream though. Interested to see what people think - it's all so subjective.