for day to day driving clutch type diffs are the quietest and smoothest operating. something like an auburn pro-series woudl be great.
cone type diffs are stronger and only cost a little bit more. only thing is that they can chatter a little under high speed cornering....er...ummm......spirited driving
lockers are annoying. they clunk and rattle, lock and unlock randomly, and they have the shortest service life
later
tim