Wowie. The thread got a bit all over the place, but it had some interesting posts in it relevant to my current situation.
As an owner of Creative Labs sound cards over the years, I've found I have little respect for the company due to their failure to properly support their products in newer OS releases. Anything less than the X-Fi lineup has un-fixable issues if you use 5.1 sound and a microphone in Win7. Windows 7's handling of sound (and Creative's very slow willingness to implement driver support for even partial functionality) often resulted in weirdness and troubleshooting for me when I tried my Audigy 1 and 2 ZS cards.
I can tell a noticable difference in sound quality between a discrete Creative card and integrated audio circa 2008. I'm curious to see how current onboard sound plays. I'm reluctant to ever suggest Creative to anyone after all the driver shennanagins in Windows 7 (in which they wouldn't release drivers to full support the hardware, an end user did, then Creative sued / tossed a cease and desist at the guy).
I'm curious about trying out the one of the cheaper Xonars myself if the onboard sound in a socket z77 mobo is meh.
I do wonder how much of the stuff I am concerned about is just marketing hype / bs (especially in regards to EAX and positional audio in games).
I own some old (but still good sounding) Klipsch ProMedia 5.1 speakers. They've been my speakers for years / still sound good. Based on a few of ya'll trying out the cheapie Xonar and noticing a big difference, I may have to go the same route. looks like it's on sale at newegg for 14 bucks after rebate...
http://www.newegg.com/Product/Product.aspx?Item=N82E16829132020