I was going to buy a pc, but i am now looking at Macs. I would just get the iMac without any thinking but i am going to have to sell my macbook air (Mid 2011) to help go towards that. Should i get the dual core macbook pro with an i7 and 8gb of RAM, or is it not worth giving up the two extra cores. I will be doing some light video editing, and maybe some gaming. Should I choose portability or extra cores?