Klipsch and Outlaw sound very good together. I have the RF-25's as well and they do a great job. I have them set to large on the 990 and they have a great response. They will get much lower than you would think when looking at them. Haven't heard the RS-52's. I tried the RS-35's back when I bought the RF-25's but they couldn't compete with the Def Tech BP2X speakers I use for surround, so I left well enough alone.