I bought mine for $150 (US) which was about $50 less that the price in the stores for the 5.1 Platinum. Granted, you can find the Platinum cheaper online, but still more expensive than the XP. I had no problems getting the USB working on mine and I LOVE having the added convenience on the USB ports up on my desk. I also like having the 5.1 output, granted I'm not using it right now, but it's nice to know that it's there. The biggest issue for me is Windows 2000 support. I'm running a dual machine and Liveware is notorious for problems on SMP machines. Not a hitch with the XP.
Just my thoughts...