Hi, I'm looking at buying a laptop for taking to school. I would use it for word processing, watching movies, a little x code and the odd game of mw3 on a windows partion. I went to the apple store yesterday and the current rMBP should be portable enough for me. At home it will power an extra 24" 1080 monitor. I've seen a large difference in clock speeds of the CPU so I was wondering whether the 13" MBA with 8gb ram, 256 SSD and possibly an i7 suits my needs better than a similarly spec'd 13" rMBP when it is announced. Will I notice the extra power? Which one will last longer doing what I would do on it? ^ And finally for people who have owned both is the air much more portable? Thanks!