Re: Best rain gear shell?
Arc'Teryx Beta AR.
Light, thin, can pack into its own hood, bombproof, and weather proof. Also has a very functional cut that allows full freedom of movement with no drag.
Since I bought mine two years ago I cannot imagine how I ever lived without it. I use it year round. It goes everywhere with me.
Also, the goretex and design is pure quality. With the addition of the long pit zips I find it breathable enough for rainy humid summer days. However, with just a fleece or heavy sweater I've been out in -40 (that's with windchill) and had no problems staying warm. Mind you, I do prefer cold weather.
The shell feels like 'paper' in the store, but it has survived everything but a real war zone. I have put it through quite a bit. You can PM me for details if you wish. I just hose it down and it looks like new again.
I have been beyond impressed with the jacket. When (ignorant) people comment about the price, I just smile. Little do they know...