1st gen dmax had injector issues but I believe they all have a 200,000 mile warrenty on them. I have owned 2 fords one with the 7.3 the other was a 6.0. The 7.3 is much better then the 6.0 in my opinion. The dmax beats them both hands down. I think you would be alright with either one just pick the truck you like better. There are guys out there that have the 1st gen and never had injector issues. Just remember you are going to see more bad then good on the net because that is where people come to seek help with a problem. Good luck with your choice if you have any more questions I hope I can help.