The Polks are fantastic, I have two setups at each of my houses. The 50's with the CS2 are fantastic for home theater & music. Plus they're cherry and pretty to look at. You can add a matching cherry PSW10 (you can find it on Amazon for $130 shipped usually).
Source: Pioneer VSX1121 (shopping for an amplifier(s))
Fronts: Polk Monitor 70's x 2
Center: Polk Monitor 70
Side Surrounds: Polk Monitor 50's x 2
Rear Surrounds: Polk Monitor 50's x 2
Subs: Polk PSW505's x 2