Divin'Hoosier:$475 for a 3mm wetsuit! :11: That's outragious. I purchased a Pinnacle Seal merino-lined wetsuit last year for $200. I love the suit. Can't say if it's the best on the market, but I know I've been very pleased and at less than 1/2 the price, I can't believe that the Henderson is THAT much better it it's even better at all.
the best wetsuits on the market in my mind are the fully custom suits offered by wetwear in florida.. the can manufacture suits out of g231 nitrogen injected rubitex which does not compress much at depth.. if you go for all the options you can hit nearly $900!!!!
I have no problems using my full 3mm in 70f water doing dives 2+ hours.. colder than that I dive dry..
if you dive deep the ONLY choice should be a g231 based suit... most wetsuits are like skins by 200fsw.. the g231 based suits have most of their thermal protecion in tack.. the best source for these suits is to see the owner at many diveshows where they take you measurements (30 +)
http://www.wetwear.com/rubatex_g-231n.htm