I've ridden all three of these. The RK I rented for a week and put 1100 miles on out in the desert. The other 2 I rode in demos only. The Vulcan 2000 , I have the least amount of time on and really liked the least. It seemed like a cartoon copy of a H-D with everything blown up in size by 15-20%. Big just to be big. It has some power , but, also a lot of weight. The R-3 I demoed a couple of times, cause it's a fun time ! Sure it's big, but Triumph do know something about handleing and it works. The 2nd demo ,I was talking to a guy that had ridden in on a 1200 Kawasaki 4. He told me the R-3 was a 6 cylinder and i set him right.Then I ended up behind him most of the ride, very timid. When I had a chance in a curve , where he balked, I nailed it , laid it over on the 240 and shot by. He later asked ,"How did you do that ?" It's a motorcycle, you have to ride it. Anyway,I bought a RK , cause my wife likes them and of the 3 it fits me the best.