I had a set of true 5.1 headphones from Turtle Beach. They worked ok, but I spent a lot of time configuring them in each program I used trying to get the best sound. They also didn't have an external power lead, so they weren't very loud. (box even said to use a headphone amp.) I never got it to work in Valve games like TF2 or L4D2. They eventually broke and I've gone back to normal headphones. Unless they are powered I decided it wasn't worth it.