My impression at that time
take this as grain of salt, since the unit is just arrived, and not yet finish its cycle of burn in...
MG, open back, Agile sounding, Focal sound house, BASS tight decay yet puncy. Vocal a bit forward, smoother treble (compare to original Clear). Better in height soundstage. Impressive Depth (good imaging)
R10, Close back, more relaxed, laid back (like Sony IMO), more articulate Bass and Mid, with smoother treble. Wider Soundstage. a bit flatter Depth still above AVG imaging IMO...
Well, I will get back again to demo.
for now, My interest is on R10...
and yet, my head still stuck with Verite Open, so my bench of expectations is a bit to high...
that's how I exp at that time...
edit : R10 image... just to give better understanding... the R10 build quality is so sad compare to MG... in many aspect (except the wood cover)... with price that I can consider similar