Well to be honest. Both of the brainwaves phones are kinda so so. Not really great imo. The M5 sounds better to me but I read several reports of qc variations of the M5. People having all sorts of issues from sound to blocked housings. The pair I got sounded decent enough but not anything crazy outstanding. I think there was a reason why Mp4nation gave a choice of either the R1 or the M5. Both are just ok imo.
I am burning in my M5 and they sound worse than when I first heard them. Probably the first time I can recall a sound really not improving from burn in. I will keep them on the burn.
Also my sources right now be it X3. ME with 2Step amp or my NFB5 which are all set to play music. Will make those free airline buds sound hi fi.. I think I might have to revert to my clip to give a fair idea of how they truly sound..