Thinking about purchasing a 2013 6.7 Powerstroke Diesel

My brother has had the 2013 f 350 4x4 crew cab 8' bed 6.7 since March and loves it !! He has had no problems with it. He uses it for work,towing a goose neck trailer and his 5er. If you look around I think you will see more new 6.7's on the road than any new truck. As far as your 2002 7.3 I have the same truck and it just won't die !!!! I bought it new and it has never seen the ford shop since. Good luck.