If given the choice of an OE-type plastic, or an aftermarket chrome plated pot metal, the metal ones do last longer (and didn't snap when it got cold, either).
Keeping the regulator and channels lubed makes the handle's work much easier.
On a professional level, I have orders coming from Moss almost weekly, and they are, by far and away, the best of the vendors out there. This is not to take away from the smaller vendors that offer a more personal touch, but I don't have the luxury of time to test each one of them.