Personally,
I had a Athena Micra 6 system, with a yamaha htr-5830 for 3 days.
Cost me about $600 (now available for about $400-$450).
I had 2 computers, cable box, and TV hooked into it.
To my ears, this sounded significantly better then my friends Logitech Z-5500's setup.
Bestbuy I believe has both systems, and like a 7 day money back guarentee. Try them out, and choose which sounds best to you.
Oh yeah, I had it for only 3 days, because the wife came home from her mothers house and made me return it.
/sigh....women.
Reorx