Buying a new truck but trying to decide which...

I should clarify though that even though the Aisin doesn't give more towing to the SRW truck it gives 8k more towing capacity to the dually. Plus it gives you the HO cummins with that 900ftlbs of torque. It's a towing beast. Didn't want readers to think it doesn't give you anything just has to have the right configuration.
If I were towing all the time I probably would have leaned more toward that setup but I'll but running just the truck most of the time.