I don't have any experience with the Strike so I don't know about its sound quality, but I have the HT Omega Claro and I can say that HT Omega provides amazing support and their drivers WORK. I previously had a Creative X-Fi Xtreme Audio and Xtreme Music. The drivers for this are a much better layout, and I've had no problem with them (Vista x64, XP 32 and XP 64).
Project: Black and White i7 920 D0 | 3 x 2GB DDR3 | EVGA X58 SLI LE
XFX 4890 | Corsair HX750 | Corsair Obsidian
That card. That's actually why I bought it, so to be able to pass thorugh DVD sounds to my amp. After that I went X-Fi, had driver issues, and now have Xonar D2X, both of which are a bit more than waht you are looking to spend, but I'd recommend holding out until you could afford prelude, usually on sale @ ncix for like 139, or something along those lines.
I decided to hold out on ordering some WC parts untill next month and bought myself the Prelude instead. The alchemy program offers support for my old games I play like WoW and guild wars and new games like COD4 already support surround sound apperently.