Springer

I am looking at a 07 Laramie 3500 SD 4x4 with the 5.9L at 8k off the list. Last one the dealer has and would have to wait 6-8 weeks for a new one I am on the fence if I should wait to buy the new 6.7 as its has little more torque,horsepower and a exhaust brake factory . I really dont intend on hauling much over 14k as I just have a Toy hauler 5th wheel so do I really need the exhaust brake? Most of the time it will just be my everyday transportation.

I'm a newbie here and to the Cummins TD. I had a Cat in my last motor home

I think I put this in the wrong area...