Try the new Martin strings with the Cleartone technology. Very, very nice, especially if your are looking for clear string separation...very piano-like.
Got the 80/20's put on my Gibson J-30 free at a clinic, after a few days they wounded too bright to me on that guitar and moved them over to my Guild D55...wow! Brightened up the bass heavy sound better than GHS Bright Bronze.
They also don't seem to have the very stiff feel of the typical Martin strings. I don't think they are rebranded Cleartones. After a month and a half on the D55, still bright and piano-like.