I was somewhat interested in both Mass Effect and Assassin’s Creed, but hadn’t bought them yet since I’ve got too many others to play at the moment. Looks like that was a good decision anyway, since both of them are now coming to the PC too, with some enhancements (better inventory UI in Mass Effect, and some new investigation types in Assassin’s Creed).
Not that there’s anything wrong with the 360 versions, but I put together a fairly powerful PC less than a year ago, so I might as well get some use out of it… At the highest end, PCs will still get equal or better graphics, if for nothing else than higher native rendering resolutions.