05 Ford 6.0 Power Stroke 170k miles with a EGR replacement at 80k miles and EGR cleaning at 160k miles. Should have kept this truck for farm and ranch use.
12 Ford 6.7 Power Stroke 55k miles and no issues to date. Recently replaced tires and shocks and that's it.
Both of these diesel trucks have given me great service and towing performance, but having said that any newer DPF equipped diesel truck with all the emissions stuff in the end will cost more to maintain or replace parts as the miles add up.