Hi Shakey- I'm not the tallest of chaps, but I am perfectly formed- anyway it gives me a lower centre of gravity so I fall over less than tall people. Musto clothing is however, perfect for fitting over my broad muscular well honed shoulders. /forums/images/icons/laugh.gif
I remember going to a lecture by Keith Musto himself where he said that mountain and walking breathables weren't any good for sailing because we a) sit down a lot and b) get them salty. Has the technology advanced or was the earlier statement just because they didn't do them at the time?
I usually find overheating more of a problem than staying warm, so shorts, reef sandals and a sweatshirt work fine - plus a Peter Storm if it rains or gets splashy.
I bought a Gill Atlantic suit for £250 (£100 off MRP) at the London Boat Show in Jan and it has been brilliant, especially in a few F8s I've been out in during October.
As for the survey into manufacturers matching body size/shape: I am 6ft 1in tall and 6ft 1in round and wear a Gill XL.
Gore Tex is a semi permeable membrane dependent on a vapour pressure gradient and so works less well in humid conditions. Also if you apply hydrostatic pressure on the outside surface of the membrane it will reduce it's performance, or just stop it breathing- this is what happens when you sit on it. The high wear areas are not going to breath very well anyway because they are usually reinforced. Its the larger expanses that will do the breathing.
I don't know if the Ocean Technology from Musto is actually a different membrane or if it is just marketing. Anecdotally, I find there is no comparison between Gore tex and non permeable fabrics- I really do stay warmer and drier. I find the greatest difference is with the boots- as a person who gets cold feet, they were a breakthrough.
On a physiological side, even when you are inactive and not exerting yourself, your skin is still transpiring and giving off water vapour, hence cold damp feet in wellies. Think of bunk cushions- that's from transpiration.