I'm glad to see this thread, because I was about to buy a set of Elixirs for my new Martin 000-X1. The other reason to buy coated strings is if you live here in the rainiest town in the US (avg. 120-something inches) where EVERYTHING rusts, molds, or corrodes in a matter of days. And living 50 yards from the ocean accelerates even that. But I've used D'Addario phosphor bronze for years (after hearing Stefan Grossman recommend them in 1978, when I was so young and impressionable), so I'll definitely try the new D'Addario's. I'm a mediocre guitarist, but have a pretty good ear, so it'll be interesting to hear what they sound like.

Aloha,
Mark