I have found DJI Customer Service to be incredible!
Currently I have an Avata 2 in under Care and DJI is trying to honor their end of the deal. The current Border and Customs problems are holding up my replacement though.
I did buy an Avata 2...
Cheapest is probably ODM.
There will be no consensus on the best. Each solution has pros and cons and the best solution will depend on your personal situation.
Some produce better orthos, others models, others DTM's.
Some are desktop based...