Basically teams with classic looks are always going to top my list. They just simply look better:
Raiders, Packers, Bears, Cowboys, Steelers, Niners (not counting the awful black alternate), Bills, Vikings, Saints, Giants, Jets, Colts, Chargers (though their light blue jerseys should be full time), Redskins, Chiefs.
So many teams' older looks are so much better than what they changed to.
Bengals, Cardinals, Falcons, Jaguars, Bucs, Browns, Rams, all had much better looks before what they have now.
Then you have the rest, which I think their uniforms are ok. Not bad but could be better:
Titans, Texans, Panthers, Dolphins, Lions, Eagles, Broncos, Seahawks, Patriots, Ravens. I actually liked the Patriots' old red uniforms better, the Eagles Kelly green uniforms, the Dolphins' throwback uniforms, the Broncos' classic Elway era uniforms, and the Lions' Barry Sanders pre-black outline uniforms.
Too many teams rely on black and navy blue.