Want 650

[Porkchop]

The baby viff is having some problems and my mechanic is having a hard time finding whats wrong. She may just be dying of old age and I really don't want to invest the time and money into a bike that isn't worth much.

So i'm thinking its time to upgrade. I'm trying to stay cheap, but with something I can do the occasional track day. I think my best bet would be a 650. I'm mainly looking between the SV650S, Ninja650R, and GSX650F. What does everybody think of the 3? I mean I've researched them extensively, and realize they are all completely different platforms and motor configurations. Any experience with any of the 3? Is the SV superior due to the availability of parts and aftermarket? I'm definitely leaning that way....