I just ordered the Klipsch Gallery-16s for the fronts but the matching G-12s are a little out of my range right now ($270) and I only have around $100-$150 or so to get the surrounds, most likely from Ebay. What line of surrounds would match other than the G-12s? I was considering a set of used Rsx-4s, singles from the HD500 line or the new Quintets. The RSXs and Quintets have a Tractrix tweeter and a similar size mid but do they really match the G-16s? I'm not an audiophile so could I just use almost anything or will I really notice if the speakers aren't a perfect match? First real home theater so any advice would help. Thanks!