I do like a lot of the classic uniforms. But there are teams that benefited greatly by a new design. Tampa Bay immediately comes to mind. New England as well. Both those teams went from bottom rung to top 10 at least iMHO. I also like the Broncos new uniforms much better than the old ones.
I'm still a big fan of Miami's classic uniforms, but I do like the new logo and de-emphasizing the orange. The new helmet and striping are nice improvements. I hate the color splash uniforms, but those are pretty bad league-wide.