Superb but hard to get on
I did end up returning this as I couldn't justify the cost vs the amount I would use it. BUT if I could have, I would have! As other reviews mention, this is really tough to get on. But after reading about Yulex I learned it stretches over time so it has to be too tight to start.
Once I got it on it was perfect - sizing worked well, it felt very warm and thick, it's made to a very high standard.
Note that I didn't wear it in the water so I'm not able to rate it based on this. But if I can ever justify the cost of a winter wetsuit in future I will definitely be getting this one.