paccar mx13 or x15

[josh1595]

I am trying to decide between 2 trucks but are prices very similar

truck 1 is a 2020 kenworth t680 with a paccar mx13 455hp and 1650tq with the 12 speed automatic and 2.79 rear ratio with a diesel apu. 350k miles and a has a 6 year 500k warrantee

truck 2 is a 2019 international lt with x15 400hp and 1750 tq its the 400sa which i believe is a multi torque rating 2.64 rear ratio and 12 speed automatic. 400k and 2 year unlimited warrantee

I like the the x15 for being able to work on the engine and not rely as much on a limited dealer network with the mx 13. Both have a low final drive and i know that the x15 is very sensitive to lugging but do the paccars hold up better with luging. My other concern is that with out the apu the x15 will have a lot more hours and will be needing an overhaul soon i'm not sure on the exact hours yet. I can always get rear gears and shift points changed but the damage is already done with the lugging. I'm leaning towards the mx13 its a nicer truck with less idle hours. I'll be more limited on emission repairs but i've been told the international is a pain to work on to begin with. The international also is going be waisting money idling in the winter and summer as well as the extra engine wear.