I tried and returned the Creative Audigy Rx this week. The sound quality simply wasn't not as good as my X-Fi Titanium, but the CMSS 3D worked exactly how I wanted it to. I am becoming increasingly desperate for an alternative to X-Fi Titanium sound card, as Windows 1709 is the latest version of Windows to properly support it.
It is annoying that my amplifier only seems to output sound properly in the rear speakers when CMSS 3D is being used. Perhaps it is the age of it, being nearly 20 years old. But for me it is nice, ruined only by Creative and/or Microsoft's inability to support "legacy" hardware.