Looking for item in title, willing to pay, not interested in flashed GPU.

Am willing to consider other GPUs which offer similar capability but compatibility is key here, which is why I don't want anything flashed. I also intend to run osx (both 10.4 for classic mode and 10.5), linux, and morphos, so having a card that works with early boot screens and each os is also something I need. So...I don't think an x1950 would work. But if so, I'm happy to be wrong!

Thanks!