Now I know many in here are not too fond of competitive MP games unless they're of the racing kind, but here's what I tend to play quite regularly recently:
War of the Vikings.

Here's a longish video of me playing the newest version (after a hiatus of a few weeks caused by Intruder...)

http://www.youtube.com/watch?v ... RwRM&feature=youtu.be

looks like a nice game

I play competitive games like HAWKEN, OSU!, America's army: proving grounds and Arma 2/3