I think based on the Behringer price and knowing they will be being made for almost nothing I would buy Avantones personally. The Behritones seem over priced give the "pedigree" of B products.
I makes me wonder how different a single 5inch driver in a cubic box can sound by different manufacturers.
There is a SOS article in there somewhere!
Maybe it could be titled: Cue the Cubes.
You need to listen to them to know really.