I'd be fine wearing the black Team Rocket uniforms, though the Aqua and Magma uniforms aren't bad either. I don't like the Cipher, Galactic or Plasma uniforms that much, and I'm not too familiar with the spin-off games, so...
*checks*
Go-Rock is meh. Dim Sun is okay. I really like the Pinchers' uniforms, and they honestly don't look evil...
Guess I might need to play a Ranger game xD