I don't know anything at all about them but I will tell you this: Only reason I'd buy a diesel pickup is because it says CUMMINS somewhere on the side...........
Now I know why I see so many of those new Nissan Titans getting sold. Have a customer with one that is deleted and tuned. Dynoed at 480 rwhp and 900lb ft tq. Not bad for a little 5.0 v8 Cummins.