I built this PC almost a year ago:

PCPartPicker part list / Price breakdown by merchant

After this list, which cost me around $1200 since I bought them all at Micro Center instead of ordering some of them online like I should have. This put me at the very top end of my budget, and since I knew the 900 series was coming out in only a month or so, I bought a 750Ti to tide me over until this summer. Now I am ready to upgrade, but with the launch of AMD's 300 series I'm a little hesitant.

I originally planned on getting an MSI 970 from Amazon, which runs $329.99. However, the new MSI R9 390 costs the same price. I know that in benchmarks both cards seem to be neck-and-neck. Obviously, the 390 has more than twice as much VRAM (3.5 GB amirite?), but I have no intention of going any higher than 1080p/60fps as I'm going to be at college for the next three years and I won't have room for a huge monitor or a multiple monitor setup, so the increased VRAM isn't a huge priority.

Originally I favored Nvidia because I thought they had better performance with Adobe Premiere (with the Mercury Playback Engine) and 3DS Max (with Mental Ray), but I've since learned that AMD cards work just as well for Premiere, and the GPU has no effect on rendering in 3DS max unless I use different renderers that I don't have access to. Which of the two GPUs should I pick?