Don't get me started on Matuse. Their 4/3 was a joke. Fine on a warm sunny day in San Diego, more like a 2 mil on a windy, overcast day in New York in the fall. Same water temp but take away the sun and add some wind and all bets were off.
Mainstream wetsuits got much better from the early 80s through the late 90s. Warmer, stretchier and more durable. Then at some point they got stretchier but not as warm. Even 5 years ago my new Xcels were a step up from the last one they replaced, but that stopped.