I use the kind that slip into the upper door hinge, by Lange, I think. About $50.
You can also buy some for motorcycles (various shapes) and do the same, probably for less $$.
Don't buy the kind that relocate the OEM mirrors from the door to the A-Pillar. I've heard nothing but complaints about blind spots on those.
2008 2-dr Rubicon, auto,
RK 2.5" Max Travel, Rancho 9000XL shocks, 37" Nittos, 5.38's, RR skids, Warn VR8000-S.
RIPP Gen 2 Stg 2 Supercharger.
"Boing Clash Boom!" - Dada Life