Pre-Boy: TWILIGHT TWILIGHT TWILIGHT TWILIGHT TWILIGHT
Boy-October: Doesn't know how to sing, doesn't listen to anyone who does. No one cares.
War: Hits a good note once in a while, lacks nothing in power. Good period, Red Light notwithstanding.
TUF-Lovetown: THE PEAK. Highly respectable. Hits notes with power and good pitch. Good cameo appearances from Kermit.
ZooTV: Loses some power, gains one hell of a falsetto.
Popmart: Loses power, falsetto. No one notices, however, because giant, glittery lemons are quite the distraction.
Elevation: Sounds like hell, and they skimped on giant lemons, so no excuses. Tears can blur the way Adam looked, but ears don't cry. Unless you're listening to The Fray.
Vertigo: Bad first few legs, improved exponentially from there.
NLOTH: Sloppy as hell, but the power is coming back (see: AUGH TIGHHED MYSEHHHLPH WI WIAGGAAAAAHHGGGGH).