Ok....I'll be the sole defender of the Polks...why?...because I own them and specifically selected them OVER the Klipsch RF5s (and Polk's LSI-15). No, I hadn't listened to the RF7's....but the horn-driven tweeter drove me away and that's a Klipsch standard. Without getting into too much detail, Klipsch RF line...very bright and very directional....probably better suited for home theater. These are designed for serious volume. The Polks?...very warm, very smooth throughout the spectrum. Feed them the power they were designed for and they're musically superior no doubt...unless you listen to rap. I'm running a 5.1 system with HK7200 (a 7 channel amp), with the spare 2 channels used to bi-amp just the RTI-12's....so each is getting 200 or so HK watts. That surely wasn't necessary, but music is more important to me than 7 channel surround and the low frequencies become even more phenomenal. I am however thinking of adding a good sub to manage the 20-30 hz range. And on a side note, they're aesthetically much nicer to look at..or so I've been told (a close friend owns the RF5's). I wouldn't straight trade the RTI's for the more expensive RF-7's were the offer ever made.