The Busa weighs 478lbs. dry, add in everything else and your well over 500lbs. I went from a 600ss to a Busa but had ridden the 600 for 2 1/2 years. I would spend more time on the R6 unless you won't mind it when you drop it. If your not 110% steady on the R6 then I wouldn't mess with a Busa just yet.My R6 weighs 330lbs and I believe the busa is around 450lbs so it is a big difference in weight. I'm not a small guy though, I'm 6'1" 250lbs, but I'm sure the weight difference will take some getting used to. Turning is what I was worried about, especially low speed turns (I've already fallen once during one of those, but I learned my lessson on what I did wrong).