I went with this wetsuit for the price. Turns out a 7mm two piece was highly recommended amongst the professionals that I dived with. I was worried about over-heating in SoCal waters, but it was perfect. Then, when I got out of the water, the two piece allows you to de-layer easily and gradually, so I stayed nice and warm while others ran for the hot tub. Getting in and out is very convenient since the jacket has a front zipper. Only downside is that the dual layers make it very buoyant, and requires adding more weight to compensate than with a one piece.