i recently got a harman/kardon 7200 avr from a friend of mine and was looking into what kind of speakers to get for this avr. so far i am considering polk's lsi25 floor speakers with matching bookselves and center speakers. that set is gonna cost me about 4 grand. i am a bit curious about can i get better speakers for that price? if anyone can help it would be greatly appreciated, just to keep in mind my spending budget for the speakers are 4000 or less. once again, thanks.