What I red, you are ready to get one crate made in 30 minutes in max then export it to med and then use it, when you'd do it in med adding one box? hm.. MED is for lowpoly modelling and making simple objects, as far I know.

Of course, why not improve it to the level of max? Why not to get the better med free, rather than buying max or maya? (of course best tool is blender.. but I don't know a thing of it, sam knows and thats enough ).