Hi, I've been looking online for a good system for a good price range but have come up with nothing yet. I'm looking for a system with 4 speakers, 1 center, 1 sub, and a receiver. Can anyone please suggest a good system to get for UNDER $500. If it goes a little over $500 then that is OK. I realize because of the price it won't be equal to a $3,000 system, but please suggest the best system for my price range. Thanks.