Yeah, I think in addition to the points you just made...cost is a factor too. So the older the model the lower the price for the most part. Plus....all that emissions crap juts scares me off. Don't want to deal with it or having to delete things etc.I would advise against a 6.7l for a truck that is gonna be beat on and face plenty of stop n go traffic in town. The regens and def fluid are gonna kill your fuel cost...
Where as the 7.3l just wont get to 55mph as quickly as a 6.7 it. It doesn't have a complicated emissions system that does not do well is constant stop n go traffic.
I guess if I'm gonna do it....the 7.3 is the way to go.
Plus, that 350 dualy dump that was suggested should be able to hold the fort down for several years since it's a 1 ton DRW and diesel. Kind of like I'm buying for the future in a way rather than just another 3/4 ton.