Seeing as I have the RF82 II, RC62 II, RS52 II and I'm upgrading from those to PSA MTM210 package, i can tell you that the RP8000F do sound better, and not as harsh as the RF's.
I've had my Klipsch setup for 6 yrs and they have have been nothing short of awesome. Depending on your budget what subs you have or don't, I would get the RF's and a nice beefy sub.
Sony 75X900F / MediaLight Quad 6500K
Denon X4400H / Outlaw 5000 (5.2.4 Atmos) AIRCOM T9
PSA MTM210, MTM210c, MT110sr, Klipsch RP-500SA
SVS PB-3000 x2