I'd take a D5100 over the D3200(D3200 doesn't have a flip out screen). I personally own the D5100, love it for photography and I really haven't done any serious video or film work with it yet. I had an XTi, have used my friend's XS, and played with t2i's and t3i's at the store before, and I still prefer my Nikon.
Personally, I like the feel of a Nikon in my hands more than Canon. I found the menu and settings and all that jazz to be more to my liking on the Nikon -- I think wouldn't take too long to be get accustomed to Canon's stuff either-- and the better low light capabilities of the Nikon were a must for my photography.