I own a Creative X-Fi Xtreme Music, I am not sure if its a 7.1 or 5.1 card but I use it with my Logitech Z-5500 setup (5.1).
The X-Fi range is Creatives latest sound card range which makes it a little more pricy than the Audigy cards but mine can still be picked up for around £50
2500K @ 4GHZ - P8Z68-V - Sapphire 6950 2GB
8GB DDR3 - M4 64GB SSD - Corsair HX520W - Dell 24"
Logitech G5 - Logitech Z-5500 - Sennheisser HD555
Macbook Pro 13" 2011, 4GB DDR3, M4 128GB SSD