Cannadale lefty - which model? Scalpel Softtail? Or Rush/Prophet AM - both are good
Giant FS - light and cheap, good for racing, no resale market
Specialized - the EPIC is always good w/ its smart rear suspension
Trek - EX nice, decend, well made overall, crappy Bontrager parts
Truvativ are not Bontrager...Truvtiv is heavier but last longer