Middleweight superbikes are highly underrated. They are to motorcycles what that 3rd string QB with a 100-yard arm is to football; all the skills without the heavy ego. Everyone knows 600s are where you start, and the "liter bikes" (motorcycles with 1000cc motors and almost 200hp) are the big leagues. But if you climb off your 600 and want to upgrade, don't think of the 750 class as a stepping stone, but rather a heavenly compromise. It's a partnership of more power with little weight gain, and when you want to go fast that's the perfect match.
Nowhere is this idea better executed than with the new 2011 Ducati 848 EVO. It's V-twin engine has picked up 6hp from the last model, for a total of 140hp. I know 6hp doesn't sound like a lot, but when that power is only pushing 369lb (40lbs less than a Honda 600RR), 6hp is like adding 40 to your car. This makes the Ducati the most powerful motorcycle in its class.