Installed and been using the drivers for a week or two now and I have to say the 3D positioning is *MUCH* better. Really accurate!
The only caveat is that it sounds tinny and distorted, like the quality has taken a severe drop. I have also changed output to DVD quality and that helped a little, but not too much :/. I was using 1.1 on windows 7, but since I made the jump to windows 8.1, it really doesnt want to use the old version.
Currently running 2.0.35 on windows 8 with a Corsair Vengeance 1500v1. I really want my sound quality back. Its currently terrible. Sorry guys :(