For the best 7.1 effect all the speakers should match. Unless you have a huge room you don't need to spend $10K it's just TV and the audio quality is all over the place. You could spend the rest of your budget on a great Clearaudio turntable or PS Audio's new Direct Stream DAC.
I helped select and installe a nice system, in an 18'X24'X8' room, that has pleanty of headroom for less than half that amount.
Two JL Audio 10" E-subs
Seven Pioneer SP-C22 Center channel speakers. (One of the best deals currently in audio)
Denon AVR-S-900W (Here the room correction gets better the higher up you go. Personally I like the presentation of the Pioneer Elite receivers).
Don't forget the 7.1 Bluray production of Master and Commander. This has some very good 7.1 content.
Have fun
I helped select and installe a nice system, in an 18'X24'X8' room, that has pleanty of headroom for less than half that amount.
Two JL Audio 10" E-subs
Seven Pioneer SP-C22 Center channel speakers. (One of the best deals currently in audio)
Denon AVR-S-900W (Here the room correction gets better the higher up you go. Personally I like the presentation of the Pioneer Elite receivers).
Don't forget the 7.1 Bluray production of Master and Commander. This has some very good 7.1 content.
Have fun