I have now ridden each of these five bikes back to back against my SV650 on twisty roads. Of the five, I liked the Speed Triple best, with the Buell next, and the FZ1 after that. I know many of you will scoff at the fact that I though the Duc was lathargic, steering was heavy, and so was the SV1000. Hands down, none of them have as useable and good a Motor as the 650.(SV still has best tourque and best revability) All of them have better suspension against my stock setup(but that will change soon). They all have about 100 lbs on the SV, so they are a little slower handling, the Speed Triple and Buell were the most nimble for thier size. I enjoyed them all, as motorcycles are wonderful analog devices for mans pleasure consumption, but I would still not give up the SV to any of them for all around great motorcycling. THe SV may well be the future "Ultra Moto" designation, somewhere between Supermoto and Hypermoto. Its just right between everything. Unclassifiable almost. The SV has created its own niche for sure. And its a sweet spot. The SV 650 motor in the XB Chassis would be close to a sexual experience.