I think I will buy the 11" inch MBA and I think I will go for the core i7 and expan the ram to 8GB are these things worth it ? I will pay 150 and 100 extra for those things, will they be necessary ? Im doing this because I love portability of the MBA and sometimes I want to play good games(this is not really important) and do some simple things in illustrator and dreamweaver. Will I be satisfied ? PLEASE. Someone help me thanks PD:Is there a big difference between core i5 and core i7?