I bought a Taylor Big Baby about a month and a half ago, which came with Elixirs. I don't like that bright tone, but after a while they rounded off a little. Something odd I've noticed; the coating seems to fray around the soundhole, and has become impregnated with what I can only hope is finger-oil/grease/dirt. It's green, as usual.

PS I used to use Gibson Bronze (ultra)light on my old guitar, a cheap dreadnought, but they always broke. One set lasted less that 24 hours. I switched to medium J-200s but with the high action could barely finger an F.

PPS Like djh, the J-200s used to turn my fingertips green, which has yet to happen with the Elixirs.