04-29-2018, 12:59 AM
Have you considered a used 2012 model? They don't cost a lot but give you a pretty big boost in performance going from a Core 2 Duo to an i5 (13") or quad i7 (15"). Plus, they add USB3. If you want a 15" then you want a mid-2012 non-retina model. The late-2012 retina 15"ers had video card problems (as did the 2011s).
The obvious disadvantage of a 2012 (vs a 2015) is no retina display.
The obvious disadvantage of a 2012 (vs a 2015) is no retina display.