Hello there! Guys I really need your advice. I have a early 2011 MBP Core i5 2.3ghz 13inch, 4 GB of 1333 MHz DDR3, Intel HD3000. It works ok, but a bit slow and needs a battery change. My question is should I sell my mac and add some money and purchase a new cheaper(e.q. asus, lenovo) laptop since I dont have much money, or change a battery,upgrade ram(up to 8GB) and stick to my mac? I would really appreciate your help.