When they first came out I bought a Matuse 4/3. It was very flexible and worked OK in California winter when the sun was out.
Once I got it back to NY, it was a complete fail. There was very little 4 mil material and unless the air temp was warm, I froze in it. Not good for windy or cloudy days which unfortunately comprise lots of my surfing. It felt like a moderately warm 3/2 at best.
I swore off Matuse but perhaps they improved since that first round of suits. I imagine they have or wouldn't still be in buisness. I relegated mine to CA till it fell apart.
I've just got a 5/4/3 TUMO from matuse - first go with the brand but they had a friends/family sale back in September i had to jump on it given the price.
The "3" part has me a little concerned for deep winter here in NY - anyone have experience?