It's been roughly about 10 years since I've done some serious biking and I'm getting back into it now that I have the time (and a little of my athletic ability left lol). So, I'm looking at 4 different bikes in the $475-525 price range. I DEFINITELY WANT disc brakes, hard tail and 24spd.

Please give me your pros/cons and educated opinions on these as I've been out of the game for a while and not sure of the current technology. Thank you.


GT Avalanche 2.0 Disc
-vs-
Trek 4300 Disc
-vs-
Cannondale CO2 F7 Disc
-vs-
Gary Fisher Wahoo Disc