Actually I just cancelled my order!
I don't know if anyone else has ever dealt with SLRHut.com but after doing some research they seem a bit dodgy to me. So back to square one sort of.
It's basically price that made me pick it over a Canon. The nearest Canon that I can see in spec is the Rebel T2i/550D.
Current Amazon.co.uk prices: Nikon 3200 is £437 over here. Canon 550D is £494.
Here is a comparison of the two specs wise:
http://snapsort.com/compare/Canon_EOS_550D-vs-Nikon-D3200/specs
They're pretty close. But the Nikon does have the 60fps, which I am fairly intruiged by for some slow motion stuff. I don't really care about autofocus, I don't really mind between 16megapixels and 24megapixels either, coz I get that MP isn't everything.
The Nikon even wins out against the Canon 650D on specs too:
http://snapsort.com/compare/Canon-EOS-650D-vs-Nikon-D3200/specs
So it's mainly price to be honest Marcus.
I've seen a few people say that the 5100D is better for film - but it doesn't have as much manual control and it doesn't do the 60fps either.
I looked at the Go Pro stuff. It's cheap for a reason. Very little manual control and you can't change lenses. It isn't really meant for movie making in a photography sense, but is meant for just whacking on your snowboarding helmet and making "sports diaries" - which is a shame, because they're cheap!