My favorite is the 5.10 Rennie High, but they do not make these anymore that I am aware of, so when I replace the Rennie's I have, I will replace them with the 5.10 Desert Enforcer High, Karver, or Cyclone. I like the high protection around the ankles and has saved my ankles on a few occasions by far.
For urban street, I like the low impacts like the Freerider (black, grey, or white), Baron, or the Hellcat.
If you want just simple, then fly with either the 5.10 Impact High or Impact Low. Great shoe all around by far.