From the looks of it, Red Dead Redemption will be brilliant. I'd wait for that.
I'm not too fond of Splinter Cell, my self, but I've never been too interested in the series, although this one does have an attractive appeal to it.
Super Mario Galaxy 2, if it's anything like SMG1 then it should be really good. If anything I'd imagine personally that it's best to get SMG2, wait for Red Dead to go down a bit in price and then get that.
