Hi there! I´m a graphic designer and I use an iMac as primary machine. Also I have a macbook pro 15 2015 as second machine (I work away from home one month a year and need the 15 inch...). The MBP is having some issues and Amazon offers me to refund the money. The question is, should I buy again a 2015 (they still sell it new) or put 400dls more and go for a 2017 model? Honestly is my second machine, don´t use it much and the 2015 covers my needs (it´s ok in speed, ram, etc). But maybe I can make the effort and jump to a new model, don´t know. Also I thought I can sell the iMac and go for the MBP 2017 + external display (4k DELL, not going to pay the 5k Lg....). But I think I prefer having two working machines, in case any fails I have a backup one. Any recommendations? Thanks a lot!