I've got a BZ200 - which I've dived for a year, and it is
almost too hot for the conditions I dive in. This summer(20degrees) I've been diving either wet for shorter dives or in my drysuit with minimal undergarments for long hangs.
During winter here in NZ it gets down to 13 degrees C and then the BZ200 does a great job keeping me nice a warm. I was going to get the 400 but I think it would be too hot.
The built and cut of the suit was perfect and made my winter diving a joy
