www.monarchcomputer.com offers barebones and combos, and a lot of the older guys around here have reccomended them in the past
www.abspc.com has some nice systems at reasonable prices
best bet is building, but im guessing you have opted out of that. just shop around and check sites ( www.tomshardware.com and www.anandtech.com) for reviews. good luck
i know these sites but im trying to figure out which ones are like reliable and not rediculous at shiping. like some websites take 2 months to make a pc