I have:

ELITE MODDED KLIPSCH. RICE BOY HERE <---

Well... I have a Klipsch Ultra 5.1 setup that I've added other speakers to

Center: Klipsch RCX-4 (Reference Series, about $200)
Front: Klipsch RSX-5 (Yes, RSX; Reference Series, about $250 a pair)
Rear: Klipsch Ultra Stockies
Subwoofer: Klipsch Ultra, Dayton 10" 100w powered (this subwoofer kicks ass and was only $100, I mean KICKS ASS)

It's all spit into the Creative DDTS-100 (it's a Dolby Digital/DTS decoder up to 7.1, also does DTS:NEO6 and Dolby ProLogic II. 3 analog inputs, 4 digital inputs (1 coax, 3 optical)

Let me tell you. It kicks ass. Even before I added the RSX and RCX speakers it kicked ass. I LOVE the way it sounds. I LOVE IT I LOVE IT I LOVE IT.

A lot of people talk shit about the Klipsch vs Logitech.

Klipsch Good: Better sound (it's a 2 way design, Logitech is ONE WAY), better clarity.
Klipsch Bad: No digital decoder

Logitech Good: "Boomy" bass (some people like this, I don't, I like tight deep bass)
Logitech Bad: Not as good sound because of the 1 way design, some people report shit breaking off in the subwoofer and it rattles.