I don't have an Xbox, and from that list of compatible games I'm going to get:
* Halo
* Halo 2
* Ninja Gaiden
* Ninja Gaiden Black
I'll be getting the Halo triple pack though.
Don't be stupid, get it on PC. You get the best PC online action game ever free (counter strike source) and then an infinite amount of mods coming out, which you won't be able to get on the Xbox version. Plus it will be so much easier to control on the PC.
Okay fair enough if you don't have a powerful enough PC to play it, but still its worth that bit of cash to upgrade your PC to play it and i'm sure you can afford it Owen as you spend a lot on gaming.
I got Half Life 2 when I got my new PC for £17.99 on play.com, and I've been playing through the main game, done over 100 hours on CSS and over 15 hours on mods such as Battlegrounds 2, Garrys Mod, Hidden Source. Best buy I think i've done in years.