I would go for the 15" way over the 12." I personally think that the 15" feels lighter than the 12" and is way more usable. Also, I'm sorry but the screen on the 12" is just pitiful. It's not the size, is the resolution and quality. I would say that if you need the superdrive, get the 15" and just take the hit. You will be happy that you did. Also, the 15" gets really hot, but the 12" get EVEN HOTER! And then theres always the issue witht he wide-aspect screen. I personally won't buy a screen that's is not wide-aspect. It's just so much more efficent. So, dude just go with the 15", plus it was just updated. Always nice to have the latest and greatest.