rf-62 and receiver?

[noid]

Ok, so excuse my ignorance in the subject.

I'm looking to build a home theater setup starting with a couple of klipsch rf-62's. However because i have never build one before i do not know what kind of receiver will do the job, for that matter i dont know much about them.

Generally speaking i like my sound and play almost exclusively flac (lossless) music, and as such will be playing flac music through this system.

Because i work at a electronics store i get this sort of stuff cheaper and will be paying ~200 for each rf-62.

Here's the receivers i have calculated i can afford right now and beside them is the corresponding price and you guys tell me which ones will do and which won't. I would like to only spend what i have to (enough so i dont loss any quality)

Denon AVR-589 $ 260
Denon DRA-37 $ 227
Sony STRDE197 $ 130
Sony STRDG520 $160
Yamaha RX397B $240
Yamaha 6130B $195


Also what do you guys think of the Polk Audio AM1055-A 10" Subwoofer?