Hey guys, first post here as I am new to the forums. Anyways, I am looking for a Mac for college. Probably used from 2012 or newer. I am a math major so I am needing at least 8GB of RAM but I don't know where to go as far as i5 vs i7. I will probably be running some intensive programs such as MATLAB and Maple. Any advice you guys can input is much appreciated. Thanks!