The Rincon is nice, though I haven't had the chance to really challenge it yet. Too busy with work/family. I put some ITP 589s on it for the mud puddles. They seem to chunk the mud pretty good. My son in law ripped through a muddy field and was nearly knocked off from football size mud clod to the head.

I've got 99' f-350 4x4 crew cab dually w/ a P-stroke, a couple mid 90's f-350s and a 03 f-650 w/ CAT.

I haven't heard much good about the new 6.0 either. They may get it dialed though. Sounds like it could be a good engine if they can make it right.