I think the trade off is worth it for the poor fuel mileage? If it's as reliable as everyone says and will do the job, the gas mileage is much better than the 6.0L or 6.4L (they don't get to good of mpg with their regen features and such from what I hear) repairs? Time will tell of course.
This is why I will own a new RAM 2500 with the 6.4 Hemi... someday. Diesel is just too much of a pain.