I wouldn't write off Henderson completely... they have a whole range of suits, Neosport is low end line, then Thermoprene and Hyperstretch, then their new H2 suit line. You can also still get their Gold Core suits, which seem to last a long time but are a b#### to put on and take off. Prices vary greatly between all the different lines of suits.
My main comment about suit comparisons - all the stretchy suits cost more, seem to wear out faster, and don't necessarily keep you as warm as their non-stretchy comp. Keep that in mind when buying.
Evo is, I think, the old Performance wetsuit line. Company was sold and I think it is now called Evo. Suits look alot like my old Evo suit. My hubby and I used to own 7mm 2-piece Performance suits. They were not stretchy, took work to get in and out of them, but they lasted for 5+ years before we replaced them. We both really liked them. When we finally did toss them because they obviously were compressed and no longer 7mm, not a single seam had come undone. Both suits were faded in color but otherwise still intact. They were durable. I only know one person who has had an EVO 3mm suit and she said it was her favorite. She has since moved back to Fla so I can't tell you if that is still true.
robin