I'd say check out a Rome Riff. It's a wide board that seriously 3/4 of the team rode this year because everyone loved it so much. I never heard one bad thing about it.

this last season i was on the bataleon jam 161w and it was by far the most fun board i've ever ridden. this year i'm going to add a more straight park board to the line up and without a doubt it's going to be another bataleon. i'm about the same size as you (6'4", 185lbs, size 12). i've narrowed it down to either the goliath 157w or the riot 155. although the riot isn't a wide it still has a decent waist of 25.2 compared to your average wide board with a 26 or so. you can view their new line up in this bataleon preview thread. although there haven't been any specs released for the new boards, i'm sure they won't be changing too much from last years.

the new goliath:

the new riot: