It seems about impossible to locate a 7.1 system, a couple were made but are now discontinued for some reason, I don't know maybe the price turned people off. But I just managed to pick up the Creative Gigaworks s750 system for $150, originally listed at $500. It's a 700 watt 7.1 system and it rocks.
I can't wait until nobody else is home so I can do a sub test without getting yelled at, the sub on this thing is massive compared to your typical PC speaker sub.
Crosshair V Formula 990FX 0506 Bios - Phenom II X6 1100T - Gskill Sniper 1600MHz (4x4GB) - Saphire Radeon 6770 - OCZ Agility 3 60GB - WD Black 1TB - Cooler Master V6GT - Antec Dark Fleet 85 - Antec CP-850 - Windows 7 Ultimate 64