I have a line on a pair of Infinity RS II (not a or b according to the listing) for $300 in good condition according to the seller. Would this be a score for a pair in good condition? My mains are a pair of polk SRS 3.1tl that are in perfect condition and pretty heavily modified (everything but the crossovers at this point). I also have a pair of dahlquist dq10's that im mirror imaging and redoing the crossovers on. Not looking for arguments here. I have heard some of the bigger infinity RSIIIb and kappa 9's and was always impressed with them. What are your thoughts? Specifications for the two speakers are very comparable. My components are Parasound p5 preamp and emotiva xpa2 amp.