If I were you, I would rather wait till there is an audio receiver that have Dolby True HD and DTS HD-MA built in processor to listen to audio in uncompressed quality. Not to mention this receiver should have HDMI input, and output for TV if necessary. Don\'t forget firewire connections and optical/coaxial inputs too. Yamaha, Onkyo, Denon, and Pioneer are great audio/video receivers to recommend. Of course, as of right now, they don\'t have Dolby True-HD or DTS HD MA lossless audio processor built in. So wait till like next year or something to get one of those receivers if you can hold off that long. Oh, if you are really into sound, getting speakers that can produce most of full range frequency sound is a must. There are quite some brand name speakers makers to recommend like JBL, Klipsch, Energy, and Paradigm which make really good and accurate speakers out there.
of course, this is only if you are really an audio enthusiast and are planning on using this sort of receiver for future Blu Ray player like PlayStation 3 that have HDMI v1.3 that support Dolby True HD and DTS HD MA.
Judging from the link you posted, in my opinion, I think panasonic makes some good inexpensive speakers and audio processors. But aren\'t as much a pro when it comes to other brand i mentioned above. Judging from the price tag and the speaker and sub. I think you will get decent sound, but expect the full range frequency to not be as smooth and higher distortion compare to more expensive stuffs. Of course, it won\'t have dolby true hd or dts-hd ma processor built in, and it can\'t accept 24 bits, 96 kHz, surround channels via the optical or coaxial connection either...
But for playing xbox360 games and sound quality is not really your thing. Then that budget hometheater system should do.