2017 dually vs mid 2000 dually comparisons?

Good post, I was wondering the same thing.. My DW and I were talking the pros and cons of keeping our 2005 Dually or getting a 2017 SRW truck, but our CGVW is 25,235lbs and that bring my 5er right around 16K..Driving around NJ,NY,and N.England its ok we just watch the hill up and down..But our trip this year to the Rockies(Tetons,Yellowstone and Glacier on up to BC/Alberta Ice Fields) our truck felt old, lack of power with smoke at 6,000' plus the trying to slow down our stop was another issue even with the exhaust brakes I was smelling our HOT brakes...OK now its No Payments or a very big truck payment.. I'm gathering many have made this decision. Fix up our 2005 or buy a new one... What do you want or is it can I afford to do? Now my 05 has 93,000mi on it and a few upgrades done trying to boost the power and increase it reliability while towing but after this trip it needs more help. For some ideas from other PU truck drivers I go to the Cumminsforums looking for ideas or get some questions answered. Maybe you should look there Too!