Whatever you choose, if you can get hold of a pair of silk glove liners, they drastically change the game. I used to have RAF ones dating back to the days when they were flying unheated aircraft like Lancasters, absolutely brilliant. Personally, I like something like Buffalo Mittens which I always used in the mountains, water resistant rather than waterproof and I take them off to do anything technical. My other choice is waterproof Sealskinz, don't panic, not real seal skin! Not cheap but very good and they have 'sticky' fingers.
Hope this helps.
Terry.