This is a great little bike for the beginner, the economically minded, and those who don't want a scooter with a girlie automatic.
Shifting its three speed transmision is very tricky at first due to the lack of a clutch, however once you get used to it, it's very snappy and will chirp second gear with the stock tire.
If revved properly between gears, it can pick the front tire up in all three gears. I've been able to lift it up while going as fast as 40MPH, it actually picks the tire up easier than my 750, but I think that's mostly due to the fact that this is an incredibly light bike.
Easily the most agile bike I've ever been on, it's extremely forgiving and near impossible to drop even when making low speed parking lot maneuvers. With practice you can make one lane U-turns with both feet up. Cornering grip is excellent making peg scraping no problem, though it does have a very nervous, jumpy feel that needs some getting used to.
Brakes are adequate at best, but they get the job done.
Top speed is about 55MPH, which is somewhat of a guess considering it only has a 50MPH speedometer. Down a hill it can do over 65MPH.
Acceleration around town is peppy and believe it or not, this bike can out accelerate some small economy cars of the line and can downright smoke a Hyundai Accent :). Passing is possible, but I wouldn't recommend it unless you've got some room.
It hates steep hills, but it can still usually manage 30MPH. Performance results will vary, but most people looking into such a bike will be smaller than my 6'2", 190lb frame. It can actually haul around me and my 230lb buddy and still do 45MPH.
Always use premium gas, otherwise your performance, gas mileage, and reliability will suffer. Besides with an average of 110MPG there's no need to be cheap. My best gas mileage out of this bike has been around 130MPG with 93 octane Shell gas (not the new stuff either).