Include

[Otis B. Driftwood]

I went from driving a 07 Cummins with a automatic to a 05 X for work and here are a few of the things you may want to consider. I drove the X for 3 months and put over 18k on it in that time. For the first week it scared the crap out of me every time it down shifted on the hills. Partly because the Dodge never did and partly because I am used to driving hand shakers. It averaged about 10-11 mpg while the cummins averaged about 15.
The X in my opinion is only a four person vehicle because the person in the last row will never be comfortable if they are older than about 12. The Dodge quad cab is only a two person vehicle since they still don't know how to build a crew cab truck and the seat itself sucks.
So after the 3 months some other people drove the X and sometimes at high sustained speeds which caused the trans to slip? we added atf and kept going until our supervisor drove the truck and possibly put diesel in it????????? Unknown problems happened with the truck falling on its face all the time. It was then parked and we got another 07 cummins with the poor automatic.
I realize you want a v10, but from my experience I would get a diesel with a stick or at the least get a v10 with a stick though that would rule out an X. I did drive one of our 6.7's yesterday with a 6 speed and it is so much better than the auto, even with a very heavy flatbed on it. Hopefully this gives you something to think about and I have not rambled on too bad. Good luck with whatever you decide.