So the question is then; How many of us audiophile gamers actually like SBX Surround?
Going by YouTube videos, it doesn't cut out the bass or screw with the tonality the way CMSS-3D Headphone does...
...but in the end, I still find it worse for actually pinpointing sounds than CMSS-3D Headphone in those L4D2 videos, so SBX Pro Surround still loses.
It would be easier for me to test some things out if I had a Z-series card for myself, though. Mostly some theories about EQing the bass and how that might affect perceived positioning, since that's the biggest difference people are likely to notice when comparing the two, but also testing it out with games that most people here wouldn't think to test with. UT, BF2/2142, etc...wait a minute, SBX disables itself when running native OpenAL anyway.
EAX works with Vista not just XP, only Win 7 removed the Hardware Sound and its back in Win 8 but not supported by these cards.
I have no clue why peeps claim EAX in newer OS did not work as it does using Alchemy for some games.
Actually, Vista DID remove DirectSound3D from its audio stack, and Windows 7 only carried that change forward. That's why ALchemy exists.
People talk about Windows 8 bringing back hardware-accelerated audio, but the simple fact is that it's not DirectSound3D and thus isn't pertinent to old games that used DirectSound3D for hardware acceleration. Thankfully, ALchemy does a decent job wrapping it all into OpenAL.
A lot of the EAX confusion stems from how it's a feature done through DirectSound3D and OpenAL, but not really a native feature of either. Notice that I said OpenAL as well; this is why you don't need ALchemy to enable EAX under BF2 and BF2142, for instance. (I can only wonder why they didn't use EFX instead, which isn't confined to Creative hardware like EAX 3/4/5.)