brubru

I have a pair of RF3's. I am running them off of a Adcom GFA555 amp. I plan on upgrading to a 5.1 or 7.1 channel reveiver, so i need a center channel and surrounds. What is a good match without breaking the bank. My friend told me that the quintets (small) would suffice for my center and surrounds. Is this true? Or, do i need to shell out the cash to get the reference series surrounds. Any other ideas? Also, what is a good 7.1 receiver to match with my RF3's, preferably in the $350-600 range. Thanks Bru