OK, I am looking to buy a 10-16 dually. The few friends I Have in the trucking biz say to stay way away from the trucks with DEF. Nothing buy a headache. Which leaves me up to a 12 & down. My dilemma is I like the upgrades they did on the 13 & up. Electronics package is way nicer and trans/frame/engine upgrades too. Most everyone said deleting the EGR is a must regardless. So, to those in the know what do you say about the 12-down vs the 13 & up conflict. Is the EGR thing true too? My 96 is so reliable I hate to give it up but I have had for 21 years and the newer ones are so much nicer to travel in. Thanks for your input.