I wouldn't go any older than 2014 but you should probably get last year's model or even the newest one. https://www.google.com/#q=2014+macbook+pro@JahBuhLun
I can put up more bread
Should I get an older model?
Which is the oldest MacBook with the power to run a ps2 emulator well?
Like one of the posters said, a good macbook will last you over 5 years. It's true you're paying more for the name, but they just give me less headaches.

