Drivers: Cummins x15 & Eaton Ultrashift or Detroit & Allison?

Engine & transmission build: do drivers want a Lamborghini set up for a favor in power/performance or do you want a Ferrari for favor in balance/reliability?

obviously as much quality HP & torque as a driver can get these days of BS regulations BUT just wondering.. Truck will be driven all 48, all weather, year round all lanes, mostly west i65 70% of the time.. hauling the typical 40,000 pound load and blah blah all week 3-5 loads a week all year.. routine 15k preventive 30k maintenance… resell 400k-500k milestone

after perfect set-up small order of multiple units. Thought here is what’s driver preference these days especially resale value