Transmission options

I have a e350 van that we converted to 4wd. Transmission is going out and have been looking. There are a lot of options out there. It is a 7.3 with a e4od. Not planning on having a ton o power but it will be hauling a lot of weight and pulling a trailor most of the time. Just looking for the best option to go with. Don't want to spend a lot on something that won't last.

Look into bts transmissions out of lead hill Arkansas.

And be ready to wait 6 months to get it. I just put a Dieselsite trans in my truck yesterday. I called and talked to a lot of places. For what i'm planning, 180/30 injector, and towing 12k toyhauler they got me setup.