My standard strings were EJ16 phosphor bronze, but it always took forever on my Composite Acoustics GX for the harsh midrangey "zing" to go away. Something about them really didn't suit the guitar well.
I recently tried a set of DR Rares, after searching the forum for "mellow" string ideas. Much, much better! They have a nice brightness, but a bit softer and not so "sizzling".
It's funny because I seem to have the opposite issue from everyone else who wants bright strings. There's bright, and then there's "bright", I guess.
