I was using a Dell Inspiron 15 3542 with Windows 10 Pro. I started just hating Windows and with an iPhone 6S, Apple Watch, and iPad I seen no reason to stay. I however only bought the iPhone but on a plan so being on a tight budget I went with a great condition MacBook A1342. Currently has a 2 GBs of ram, for me being a student. Should I upgrade to 4 or 8 GB?