Saving up for a copy right now, but I am torn between the PS3/PC version or the 360 versions. I mean, the 360 version would let me play with more bros than the other version, but PC version is tempting... :/
Don't be an idiot. PC is the best route.
Get the PS3 version, as far as I know, if you sync your PS3 account to Steam you get a free PC copy. That means 2 games for 1 I guess.
Anyways, I can't wait for Portal 2. Valve is great at what it does and honestly, Portal 1 was fun enough to get me hyped about 2.