I think the decision with respect to games should be pretty clear. You can see what's already out, we know the big hitters that are coming this year, we know some of the big hitters from next year and can make educated guesses about some others. If you're not compelled by the gaming landscape thus far I doubt whether anything will come out next year or the year after that will change that, unless of course you are the kinda of person that buys a system for the a single game.
If you are compelled by the games (I am) then I say go for it, but the other question is should you wait? If fifty bucks matters to you and you are willing to wait a few months, then at least wait for E3 and see if there is any news about a price cut. I doubt anything you see at E3 is less likely to make you want the system but more information never hurts. Personally I think we won't see a price cut until closer to the end of the year but I still wouldn't bet my house on it happening even then. Are you willing to wait that long?
If you are compelled by the games and fifty bucks doesn't make that much difference then the question becomes, what are you waiting for?