Hi,
yes I have them. I shoot a damaged TB XP Seven at ebay (before that, I bought a pair at Amazon, but send them back).
I repaired the broken cable and the Sound Quality of the headphones is terrible but the ACU (controlunit) is great, except the low Maximum volume.
The good Thing is, that you can use the ACU with any other Headphone or Headset. It shouldn`t have to much ohms, but you can put an amp between it, like I did. Thats great.
So I recommend the Sennheiser and you can try to buy an single Turtle Beach XP7 ACU on ebay.
But don`t buy the TB XP7 for the complete Price. It is really bad. When I opened it for repair, I saw the plastic fantastic and the Reviews on Amazon confirm the bad build Quality with lots of broken cables.
The Sony MDR MA900 is a good option too, or an AKG 612 + an amp.