If you go on Amazon they have quite a few to compare, interesting that other than the colour of the plastic many of them seem to be identical.
The designation that seems to be widely used is DA6 or DA6+ (more powerful motor) I presume they are all made in the same factory in China with appropriate badging.
I can not tell you which is best as I have not even bought one yet but I will be interested in any genuine comparative assessment the thread raises, though at present after reading the last thread on the subject a week or so back I am veering back toward a rotary model.
Having broken my 'only Makita' rule and bought a cheapy which lasted about two years and one hour running.. I bought a Makita 9227cb. Chalk and cheese really.