I have been a Mac Pro owner for nearly a decade now starting with the Quicksilver Mac (then to the Mac Pro 2.66 quad and the Mac Pro Westmere Octo). I now am an owner of the 2013 cylinder new Mac Pro with six cores and the D500 cards. The new Mac Pro is quick, with all apps. I do some video editing and it is nice to see the computer being so responsive to everything. Also, the native thunderbolt is great. I have connected the Mac Pro with my laptop with the thunderbolt bridge and the files (large multi gigabyte) move very fast. It is pricey for the horsepower and storage. I had to buy a Lacie 5Big to house my previous incorporated storage. However, in total, the new Mac Pro is an upgrade from the Westmere.