As a fellow big man on a snowboard with similar though slightly larger stats than you quoted, I can stand up for the NS boards being solid as I currently ride a Legacy and have ridden a Heritage X and Revolver as well. I can also stand behind the Ride boards though it's been a few years since I've owned one, they were my go to deck for the better part of a decade.
The Smokin KT-22 is also a solid ride and was on my short list when I bought the Legacy a couple of season's ago.
I haven't been on the Nidecker but they make a quality board. Kessler I always think of as more of a Eurocarve hard boot type of board... that's not to say they don't do other things also but that's the stereotype I have of them.
The only board on that list I'm not a huge fan of is the SkunkApe. While it's not a bad board as Mervin makes overall good product I just think you pay a lot for the hype machine they use to pump up their gear. I've ridden them a couple of times over the years and it always just feels like a big, dead plank of wood to me. It holds an edge really well and has some cool graphics but the ride is just boring and had no life to me.