I'm with Ken on the DC gloves. I love mine. Nice and toasty, no problems in 50 degree water. Lately, the rings have become a little "sticky," like, they don't want to come off when I want them off. A bit of leverage solves that issue.
I'd like to see Ken's replacement tool. I haven't needed to replace one in years, but the first time I did replace a glove, I grunted and swore a lot. Inexperience with the product, no doubt.
I thought I saw some Dive Rite dry gloves that were similar to the DC gloves, but had a locking clamp. I liked the idea of the clamp for ease of removal, but figured that the clamp is an entanglement hazard and/or could damage a suit.