Originally Posted by ajmorell
Yeah I was referring mostly to the newer 6.7's...a guy at work has a '06 5.9 that I rode in that wasn't too bad but I still think it would be unpleasant for any extended period of time. However, it's also a bit of a "bro truck" (he's one of those douchey guys that wears a flat-billed hat and drives a diesel because it's the cool thing)
I had an 07 with the 5.9 for about 70k miles and it wasn't even remotely unpleasant. It wasn't like driving a BMW or anything, but I had zero complaints about comfort or smoothness from the diesel.