yea sure it's a matter of taste. (coming from a sennheiser HD800)
For my taste the momentums are too warm and are really lacking in treble.
I don't think it's a transparent hp at all.
But besides sound signature, the momentum weren't impressive technically.
Smaller sounstage than hp100 and the lower bass of the momentums is muddy compared to the hp100.
Best try both to make up your mind.