I've never had a shell until just recently. I was looking for a waterproof shell that I did not have to seam seal.
I went to LL Bean and tried on their goretex shell. It was robust and I really liked it. It was seam taped. Cost $79.
http://www.llbean.com/llb/shop/78958
I did not want to spend that amount so I ordered the goretex OR Revell shell (3.7 oz)and it arrived two days ago. It is not as rugged as the LL Bean but it will do perfectly for my needs. The XL gives me plenty of room for layering below. I'm pleased with this purchase. Cost $52 (on sale at Campmor).
http://www.outdoorresearch.com/en/mens/gloves/revel-shell-mitts-4b96ff032e4ca636f18171a702064013.html
You could also look at the OR Mt. Baker shell which is 5.4 oz, seam taped and more solid than the Revell. Cost $99. It was more than I wanted to spend.
http://www.outdoorresearch.com/en/mens/gloves/mt-baker-shell-mitts.html