well try to judge for urself... look at the quality of the frame (chromolly, size of top-tube etc.) check out the wheels...(14mm axels?, 48spoke?, 1 wall or triple or double?, sealed axel bearings?) also for your size ur gunna need a 3 piece crank, i suggest to scrap the stock one and go for Primo (exel or powerbite) or Profile. I only weigh 160 and i'm running a Primo exel crank.
b4 u buy the bike ride it and make sure there are no plastic parts. n/e eastern is good but if ur buying used take into consideration what i said above