I have a Kokatat breathable and its great. They are designed for paddling which requires a lot of upper body freedom. Once I cut the gaskets to the correct size, (tight enough to not allow water in, but not so tight that circulation is cut off) I can sail and actually forget that it is even on. Most sailors in our club are either using this kind or are going to it shortly. They are real expensive, but the are worth it. Don't miss the wetsuit even a little bit.
I will be sending it back to Kokatat to have them add the relief zipper over the winter and probably the thigh pocket.
I bought it at REI. I suggested to my whole family that if they were getting a gift for me for christmas and/or the impending birthday, that they get gift cert. at REI. I actually bought the suit before thanksgiving last year and after Christmas and that-there-birthday, cashed in the gift certs on the suit. After the gift certs where credited and the rei member cash back, the suit cost me about $300.
www.rei.comhttp://www.kokatat.com/ 
