It depends on how big you want. The high roof transit van are awesome as dive vehicles but are really really poor for towing. I run a 2023 extended express 3500 cargo. I have an RV couch that folds into a bed. A fifteen CFM compressor, 6 oxygen and helium tanks, my dive gear, and whatever else I need. It daily tows a 6 ton dive boat.
All that said, it is a piece of crap compared to the rusted out Econoline 350 that it replaced. It is now the only option for towing with a van, but I would never in a million years recommend a chevy van over an econoline if you are shopping used.
A box truck or small bus would be ideal, but you can quickly run into parking issues in many areas.