Hi all, I'm deeply considering buying a refurbished 13" ((Current Gen)) MacBook Air. But I'm not sure if I should get the 2.13 GHz with 4GB ram, or the 1.86 with 2GB ram. I use my computer mostly for school, some basic gaming, and a lot of internet use. I previously owned a 2.66 i7 15inch MacBook Pro. Is the extra ram and processor speed worth nearly $200? I need help deciding between these two!