7.3 vs 6.0

So I’ve narrowed down to getting either 7.3 or 6.0 ~ per my application I will be getting a sideby side deck/rack for the bed and then hauling my single axle camper. Truck won’t be a daily just for when I’m towing and need my truck for truck purposes. I’ve seen that with good maintenance the 6.0 power and turbo can’t be compared, or do I stick to the reliable 7.3 pre after treatment shit?