Well it has only been a half-day since driving my Colorado diesel off the lot, but we put some miles on it last night and everyone loves it. Took it up into the mountains on some really gnarly roads and the ride is just amazing...at least compared to my 2002 Frontier. The exhaust break is nice for going down steep inclines. Runs really quiet for a diesel, but has just enough sound so you can hear it. Road noise is minimal.
One of the biggest complaints i've read regarding the diesel is that the 0-60 is something like 0 seconds (or something like that). My first thought was, who cares?? After driving it, i care even less. The thing gets up and goes just fine. The pull is super smooth.
The bed is 6'2" long but super deep. The wheel-wells have minimal intrusion into the bed. My buddy who is a gear head commented about how big the bed is.
So far i've found nothing to complain about, other than that the sound system is nothing special. I would have paid extra for the bose, but this particular truck was hard enough to find with the features that i really wanted, so figured i could live without it.
Cloned - PM me if you want more details.