I've been riding sport bikes for over 20 years and recently have had a few cruisers(Mean Streak, Boulevard and now a Vegas). I currently own a 04 Hayabusa and have had it for 3 years. Seeing as your used to sport bikes just about any cruisers is going to feel slow, at least they do to me. But I can say that my Vegas is by far the quickest V-twin I've ever ridden and it's really loud so that makes it seem even faster. The only down side to an R1(I used to own one) I could see is the 2-up riding. There is no way a passenger is going to be comfortable on that for very long. If you like breaking into triple digit speeds regularly or riding the twisties hard you will miss the sportbike. Here is a pic of my Vegas
