Arma2 looks really good but I think I'll wait for the bugs to be ironed out before buying.
I have heard of Civ IV. Practically everyone gave it GOTY that year! Is it as good as the reviewers all say it is? I've never played a Civ game before.
Last time I bought a game on the strength of its reviews it was CoD4 and I was sorely disappointed, I mean I was bored to death in that game and if the SP campaign hadn't been so short I doubt I would have finished it at all.