I bought the Drystein to use as a winter shell, for cold wet weather, thus far it has performed above expectations.
I have worn the jacket for 3 days backpacking in Pisgah Nat. Forest, 40's and raining, and I was as snug as a bug in a rug. Sweat was wicked out so when we stopped I didn't get cold, dry and warm the whole time. I also wore it doing a 2hr jaunt in about 60 degree dry weather to see how it would handle sweat and it was great.
Athletic fit, no extra fabric.
As waterproof as you would expect given the price tag (read: completely)
Zippers are nice and tight, no leakage there.
Chest area on the inside has an additional layer of soft material so it feels nice, plus a soft inner pocket for phone/mp3/ect
Hood tightens via two bands, so it almost holds on to your head, does not simply pull back and let in cold air/rain
Control for sides of hood can be operated with jacket fully zipped up.
Long enough back that it doesn't expose your lower back when arms are lifted.
Hand pockets are soft on the inside.
Material does not feel like it would hold up forever against a lot of abrasions, or snags too well.
I am 5'11 170lbs and got the medium. I tend to wear a fleece shirt and Stoic Luft Insulated Sweater underneath comfortably. If you want thicker layers go a size up, as it would be a bit snug beyond that.