the F1 "Hurricane" is a great bike, but like Justin said, they're not easy to find go-fast parts for. rearsets, body work, even exhausts...
I can't say enough about the F2/F3 as far as value and availability of parts. It's a heavier, slightly more powerful SV650, only even LESS expensive to buy. Only drawback is they're a lot older, and just have the typical older bike problems (rubber bushings drying out, higher mileage - not that it's an issue with hondas, etc.), but a replacement engine & trans will only run you $400.
what's your time-frame for buying? I promised my fiancee I wouldn't buy a new bike until we replaced the roof, but...