Im trying to build a new home theater setup to go with my new 55 inch Vizio tv. Just purchased a Pioneer Elite VSX-21TXH receiver and now I need to update my old HTIB Sony speakers and sub to a new 5.1 setup. I only have between $400 to $500 leftover to spend. Any recommendations on a speakers and sub to go with my receiver for this price range? Thanks for your time.