Idi is the simplest engine to work on, and all it needs is injector o rings. Can knock that out in the same amount of time to change plugs...
idi is also lacking awesome POWA!!!!! I've driven a ford 6.9 (I believe) idi a 7.3 idi and a Chevy 6.2 idi and hated all three. the smaller of the fords even had an aftermarket banks turbo kit and still sucked. you just can't beat a diesel that is direct injection and turbo. you are very right about the simplicity though and usually pretty stellar fuel mileage.
sent from the c1500 Denali