My choice is between WWE and TNA, since I can't see ROH, Noah, or PWG on free tv. So between those two, I will choice WWE.
I agree that TNA delivers better PPVs in terms of wrestling. But ultimately they don't mean anything as compared to WWE's PPVs. Say what you will about WWE. Though you might not like the guys they push, at least they push their younger talent. Guys like Cena, Batista, Edge, Punk, Lashley, Umaga, Kennedy, Morrison, and Orton. While TNA continues to push the ex-wwe superstars over guys like Joe, Daniels, Styles, and Abyss. WWE is letting their young guys run with the ball while TNA has become Total-Nonstop-Angle. It's like with Jarrett, only with a better wrestler, who holds the title for a million years without putting someone over.
So b/c of that I give my vote of promotion of the year to WWE by default. God knows they have had a topsy-turvy year with all the injuries and steriod allegations. Yet somehow they have perservered through it. And now with guys returning they have put together a string of three consecutive PPVs where they have delivered the goods, imo.
Here's hoping that this trend continues into the new year. And here's hoping TNA can start turning things around, and one of the other three promotions mentioned can get a national tv deal. And most of all here's hoping for another wrestling boom, like in the mid to late '90s.