Thanks for the info here, PENG; it's not that I necessarily "like" Polk speakers, it's just that I was trying to at least salvage my CSi center channel, so I was under the assumption that replacing my R20 mains with other Polk towers would make for better timbre matching and such. Is this necessarily true, or can I mix the Polk center with other brands of mains?
Since I won't be swapping out my Onkyo 605, I would probably be better off going with the RTiA9s, no? Should this receiver be able to power these?
I'll take your word on this one; I just know that my R20 bookshelves are in need of desperate replacement...