the best speakers i have heard in that price range are the ones i own: tekton design single driver, crossover-less fostex 6 inchers @ $350/pair. i don't own a sub but tekton makes a 10 inch sub for $350 and an 8 incher for $300. these are all handmade with much higher value parts than many many speakers near this price point, which are often mass produced with cheap parts/labor (not that you can't get good sound via this route but i'm just sayin...). for the money, i can't imagine expecting much more from a pair of speakers.
Best sub/sat for 600.00 or under?
My brother-in-law wants a sub/sat system for 600 dollars maximum. All I know of is the Cambridge Soundworks system. Does anyone have any other suggestions?