Follow up from my post about struggling around an upgrade. I had an old 2009 13" MacBook Pro w/8GB RAM and tons of internal storage. Long story short, I got a well priced, used 2014 15" MBP, quad core, 16GB RAM, and I can say this -- it has really made picture processing do-able again. So, if you are on the fence and in a similar situation to me -- I'd say "go for it!" in terms of speed and happiness with post-production.