1) My Budget $500ish

2) I am looking at a brand new 2008 Trek 4500 18" Local bike store asking $500.00
or 2010 Trek Marlin $569 or 2010 3700 Disc $489? (I think can't remember price). I put a deposit down on the 4500 but it is a mom and pop shop so they will prob let me change my mind.

3) What type of riding do you intend to do? (e.g. Cross Country, Freeride, Downhill, paved paths)

4) Do you have a preference over a hardtail or full suspension?

5) Age: 25 Weight: 180 Height: 5'11" Inseam: 31"

6) Have looked at BD and at local bike stores and Craigslist (Wally's or Road bikes)

Thanks for any help...