I have a practically new (only worn on two or three dives) Henderson Insta-dry wetsuit. I normally wear XXL shirts, and typically order 3XL wetsuits from Henderson, which fit perfectly. This suit is a 3XL, but really fits like you'd expect an XL to XXL to fit, i.e., just too damn tight for me. :glare:
Many people, including Wetpixel's own Eric Cheng, say Insta-dry suits are the warmest (for the thickness) wetsuits they've ever owned. They stick to your skin like...well, a second skin. But everyone also says they're a pain to put on, so you need to use water and/or oil to facilitate the donning process. (I've never used oil, but know people who do.) So if you generally wear things between XL and XXL, this might be a great fit for you!
Anyway, if you are interested in this suit, make me an offer. The cheapest price I've seen new is at LeisurePro, where it sells for $300 (regular price is $526). I'll ship only to U.S. destinations.
BTW, I'm 6'5" tall and 265lbs, if that gives you some basis for comparison.