I've done some research and need to buy bookshelf speakers that will be used as mains in a home theater system. Eventually, in a year or two, they'll be moved to a music only system in a home office. I have nearly perfect pitch, so music is very important to me, but I do watch a lot of movies. I already have a Polk RTi 500 f/x bipole speakers (that were meant for surrounds) as main speakers and no center, and the old Polk LS f/x as rears. Matching the polks doesn't matter, as they will eventually be replaced/sold. I do have a polk PSW650 subwoofer right now.

I really want something that'll sound distincly better than the polks. I listen to basically all kinds of music. I'm driving them with a Yamaha RX-V2095 with 100wpc, but that'll be upgraded eventually to something like NAD, B&K, Bryston, ATI, Rotel, etc. separates with 120-150wpc.

Right now I'm considering either Definitive Technology Power Monitor 500's or the B&W DM602 S3. The Def Tech's retail at $850/pair, and the B&W's are much cheaper at $600/pair.

I haven't heard either of the speakers, so I'm not sure what to think. From appearances alone, the B&W's look extremely high quality for their price, but appearances can be deceiving. The Def Tech's feature powered subs, linkwitz-riley crossovers, and higher power handling (that won't really matter with 100wpc), but it basically comes down to what sounds better. Has anyone heard either, or preferably both of these brands (Def Tech Power Monitor series or B&W 600 S3 series) or is familiar with then, I'd appreciate any advice.

Thanks!