it's capaleen all the way for me. I use a combination of shirts and long underwear, mostly patagonia brand in my dry suit. When you are on the boat, you can take a layer or two off the top without taking the whole suit off. It's a bit bulky but less binding than a full suit and keeps me way warmer than any Dry suit companies undergarment ever did. AND it keeps me warm when it gets moist, it whicks the water/condensation away from your skin. the stuff is amazing and is good for many other outdoor uses. I've had one of the pairs of long underwear for 10 years and it still keeps it's loft. check out the selection at places like
www.rei.com. hope that helps
