i havenĀ“t ridden a yamaha R6 but have heard they are good bikes. i own a cbr 600 rr and love my bike. im partial to honda but like the yamaha r6 also. not much for the gsxr. but they are popular so if you ever need to find parts for it there out there. cbr is also easy to find parts for. they all have there plus and minus. i advise test driving each one before buying. go to a nearby powersports and sit on each one and find out first hand what feels best to you.