I've run across a pair of used Paradigm Studio 60's in a local retail shop. These speakers are (reportedly) about 2 years old. They sound great, but have a couple of small cosmetic blemishes on the cabinets. The store is asking 800$ for the pair. I'm told the new version Studio 60's sound a bit better-though I haven't yet found a pair to audition. Can anyone give me an opinion between the two series? Also does eight hundred sound like a reasonable price for the used speakers?