I did exactly that, coming from the 2012 MBPr, to make sure I’ll have a reasonable machine for the next 3 years (having warranty again). It’s better to pay rela

I did exactly that, coming from the 2012 MBPr, to make sure I’ll have a reasonable machine for the next 3 years (having warranty again). It’s better to pay relatively much for relatively old hardware that works well, than more for newer hardware that doesn’t. The only serious issue with the 2015 model, the screen coating, gets fixed easily. Newer models have fragile keyboards, oversized trackpads, a lack of ports, and more. Good luck having those fixed. If you do want a Mac and can get away with its performance (graphics in particular), get the 2015 over the 2017, no doubt.