I've owned an original SBLive, SBLive Platinum 5.1, and an Audigy, and I was never really happy with any of them. I kept buying the new generation in the hopes that it would be much better than the one prior. Sadly, the original Live worked the best out of all of them. Yes, I have always had a Via chipset, so I'm sure that was part of it. But it's also because Creative's drivers are God-awful. I would get stuttering, popping and clicking, regardless of what PCI slot the card was in. Yes, I had ACPI on, but that was non-negotiable. A card made in the last few months (let alone the last two years) should be fully able to share its IRQ with other devices. It's just inexcusable that the Live series has so many problems with that.
So after wasting $200 on an Audigy Platinum eX and being wholly unsatisfied, what did I do? The best thing I could have ever done--spent $99 on a Hercules GameTheater XP. Not only is it a great card with a great breakout box, but its Windows XP drivers are SUPERB. IIRC, Hercules had them released right before Windows XP hit the street and I've not had a single glitch, pop, stutter, BSOD, or other problem of any kind.
Plus it sounds AWESOME. I ordered some of the new Logitech Z560 speakers... can't wait to hook those puppies up. Man, it is SO NICE to not have to deal with sound card problems anymore. Not to mention that this thing is $100 cheaper than the equivalent Audigy. Hehe, now I can waste my time dealing with ATI's crappy drivers.
I don't want you to think the GTXP has ZERO problems for everyone. I have heard of issues with SMP most often, and I'm sure there are others (check out the forums at hercules.com). But, personally it's working great for me. For the first time my sound card works as expected. It's terrible that creative lowered the bar so much that I'm actually pleasantly surprised when a sound card works how it's supposed to.
l2c