I would wait till after E3 has passed to see what PS3 has to offer. It's gonna be pretty tight between 360 and PS3 this round. I think 360's done a much better job of securing developers than with XBox1 as well, but PS3 will have more Japanese support. So watch out for the games in May, then pick whichever one you like the sound of.
Things to remember:
-Blu-ray may not be the format of the future. There's always the cheaper HD-DVDs which more film studios are starting to like. Sony will be pushing its new format as pointlessly as it did its UMDs on PSP.
-PS3 Online/HUB/Wa! may be free but will it be any good?
-PS3 might retail for over $600!
-360 might end up just being an expensive machine to play Gears of War and Halo on, with all other games appearing on PC.
-The range of games on 360 atm is pretty much just arcade shooters, racers and fighting, which is ok if that's all you're looking for!
-Halo 2 was meh..
In my books the only sure winner is the Revolution. :P I miss not having a cube, I really wanted to play Killer 7 and Ikaruga!