what's up...i just started mountain biking and right now i have a Trek 4300...i'm looking to buy a full suspension frame, and found two that i'm interested in...one is a '04 Diamondback XSL Trail (18") and the other is a '04 Giant VT-3 (16.5")...both i can get for around $300 each...which frame would you choose...i'm about 5'9" and a buck sixty...