Sound Blaster Z and 3D Positional Audio

Sup ppl?
I am interested in upgrading to the new Sound Blaster Z. In terms of gaming performance, has anyone here tried it much? Especially with headphones? I am really interested in how well the 3D positional audio works.

Currently I have an older X-Fi Fatal1ty Pro 7.1 and in BF3, the audio is so ridiculously good it's almost like cheating. I can hear everything and determine exactly where each sound is coming from with my surprisingly decent Turtle Beach X12 Headset, which appears to support virtual 7 channel surround. I can slowly turn 360 degrees and hear each sound properly transition to another channel while fading out from the previous one. It's amazing. Similar experiences can be had in CS: GO and other FPS titles.

I would really hate to give up that level of positional audio for only increase in audio clarity, which I am sure the Z would most certainly have over my current sound card. Any input on how well the Z does with position audio would be much appreciated. I suppose that should be a main feature of it since it is labeled as a Gaming Sound Card.

Thanks
~D