I am still trying out different guitar strings to find out what suits me best. But so far D'Addarios mediums seem to give me the best tone.
Sparks

I tried the Elixers on my Gibson and did NOT like them - both sound and feel. I just switched to Ernie Ball Earthwoods and like them much better.

I was using Martin SP mediums, i just changed to Elixir custom lights. I'm curious if they will last longer, they seem to intonate well. Time will tell, i was curious about the coated strings. Usually when they lose their gold look, i'll replace them. (2-3 months) I changed the church's guitar to Elixirs, and they hold their tune well, and it sounds fat, and it's a cheap Fender. (my worship leader noticed the difference) I had to back off on the pre-amp alittle. They seem easier on the fingers, not that i don't mind the callouses.
The degradation roll off on the Martin strings was so subtle i didn't really notice they were flat until i heard the tone from new ones. It still sounds fat in the low end with the lighter strings, but it isn't a huge jump in tension. My Martin originally came with medium SP's. It was a concern since the guitar was designed with mediums, but so far so good.

Has anyone been watchn America's Got Talent?... the guy who made string instruments out of stuff like shovels and vacuums..?... He has since been voted off but that is talent to learn the do re mi fa so la ti das of tools!

I bet a vacuum makes one sucky guitar....just sayin

Tis true. It's amazing how tantalizingly boredom quenching playing with a rubber band harp or silverware orchestras can be (when you're six at least; or if you happen to think like the average six year old, in which case carry on). Now doing it on national television, well...reminds me of one certain act last year...