I agree, go to Frys and listen. The A7 and A9 were both in a separate receiver/speaker demo room which was small, but the RF82 was in a big room show casing 'systems'.
To ME, the RF82 were much clearer and easier to understand. I used Rage Against The Machine as my demo CD. It was loud, could hear the cymbals, and the bass was deep. Had them power it with denon 3312. The polks just sounded like it had no highs at all and the voices were muffled.
Denons have audyssey, so not sure how that affects these speakers in a real home environment...
Many people say the Klipsch can be fatiguing, but pairing it with a Denon should help (from what I've read), but I have not had enough time to go sit and listen to see if I get fatigued.