fit makes good bikes but are really trendy right now. personally, i think you can get another bike for around the same price w/ similar features.
kink gap. you want a bike for trails and dirt jmping? this bike is the only bike that's like under $400 w/ a 21" toptube. more length is better control. it also comes w/ tall bars (control again), 25 tooth sprocket, dope wheelset, and even pegs if you want to get into street
premium solo. this bike comes w/ 8" bars (better control, perfect for trails), top notch premium parts, 25 tooth gearing, and good wheels. the only problem is it only has chromoly main tubing. if you have the extra money buy the next step up and you will get a full chromoly frame (more durable, lighter)
stolen wrap. main tube chromoly, tall bars, 20.75" toptube (pretty long), 25t sprocket, and odyssey pc pedals. plus, this bike looks really good.
and finally a subrosa. this bike is on sale right now for mad cheap. subrosa is a newer company but has so far made great products. main chromoly, 8" bars, 25t sprocket, pegs, plus a really cool color scheme
let me know if you have any more questions