So I'm going for my first Mac in a couple of weeks, and I down to two models the MacBook Pro 13 2016 non touch bar or a refurb 2015 RMbp 15. The refurb 2015 15 RMbp is 1699 also the same price as the 2016 RMbp after I add 16GB of ram, I plan on doing some music production with logic and some light video and photo editing. Is the increased power of the 2015 15 inch that much more substantial than the base 2016 13 inch because I like the idea of having one USB C cord connected to a 4K monitor I like clean setups,what's do you guys and Gals think ?