Used an SM7b for the tune I'm finishing now... just wanted to change it up a little from my usual M88. The tune has very smooth vocals in the verse with very slightly belty chorus.... ended up sounding great. Mic ended up sounding great.
FWIW -- I know the "Talk" guy loves the SM7b and uses one all the time.
IDK -- I feel like I get more consistent performances out of myself with a mic I can sing into vs a condenser which I always feel like I'm singing across a distance at. I do prefer condensers on most other people though and none of them are babies about wanting to hold a stupid mic like I am.