I do a lot of video editing.  I had been using an i7 Windows Desktop gaming PC/48Gig RAM.  I was getting fed up with constant Windows Updates and things that stopped working in the middle of editing because something was updating in the background. It always seems to required a restart before Premier would work again.  I have only had this MAC a short time but I am very impressed by its performance.  Videos are rendering fast and the 16GIG of ram has not been an issue at all. Its a bit pricey for the specs but the OS seems so much better at handling the processing than my Windows PC did.