okay, i'm pretty much talking to myself here, but i thought i'd finish off this thread anyway.
i went and took the plunge, traded in 6 old games and got gr2 last night. all i can say is, this is one gorgeous looking game. the ots viewpoint is sweet, graphics much improved from gr, and the feel of movement is way more natural now.
it's going to take a little time to get used to it, but this game clearly has a lot going for it against halo2 (e.g. strategy is more than just "who can get to the sweet weapon first). i haven't played online yet, have decided that i'll work on the sp for a litt