My 3-year old Flashbomb was starting to get a bit chilly with some seepage coming in. So I picked up a used-once Matuse Scipio 3mil a couple months ago for cheap. It has a couple quirks for sure...
1) The over-the-neck underlayer flap doesn't quite sit flush under the outer piece, so it took some tinkering to make it lay flat but think I have it so it's comfortable & sealed now.
2) Also, they use smoothie on the inside from waist to knee. In Nov, it had me sliding around some inside my suit, but once the water dipped down closer to 60 in Dec, it was fine- and actually quite comfortable- like wearing silk underwear!
But the suit itself has been toasty, with great flexibility. Granted this is meant to be their top-of-line model, so I probably wouldn't pay full price ($600!) for a new one, but I am pretty stoked so far since it cost me about 30% of that.