Hey @Stillhart ,
Got the Omni today and it's a pretty awesome device! It's smaller than I expected (same went for the Vali) and works well. A TON less hiss than the Mixamp.
What settings are you using for your Omni in the SBX Surround slider? Not sure what % to set it to.
Honestly, I don't like to run all the effects and stuff on. I just turn on surround when it's time to game and leave it at that. I have it at 100% right now. I think I like it closer to 66% with the Q701's though, as they've already got a massive soundstage.