Lindsey's always sounded pretty clear. Just a couple artists that come to mind as being hard to decipher are Michael Stipe of R.E.M. (their early stuff especially) and Darius Rucker of Hootie and the Blowfish (love the guys voice but the faster songs of his are tough to understand sometimes). Once in a while I'll visit a websire of a favorite artist and look through the lyric section and find I've been singing some of the words wrong for years, it almost makes it like hearing the song again for the first time
