I finally purchased the MW07 and selled the Senns. To my ears, the MW07 are more airy and separation between instruments is better, a more deep and 3d sense of space with ha slighty bigger soundstage, the upper mid is more present withou being harch except in some songs or bad recordings, giving a sense of transparency and organic voices. The treble seems from memory more precise and detailled....
I really like these but I also have to admit that they don't fit really good in my ears, I finally use them only in quiet places... the Senns had better fit and isolation and I think that for an "on the go" purpose, these are better... For "critical" listening in quiet places, the MW07 are my favorites.
Now, I also purchased the Earin M2 and I have to admit that those are also incredible.. first, the fit and isolation that are top class...and the sound that reminds me a lot the Senns... sincerely, they are really nice... good bass, natural mids, rich treble...good soundstage... and so easy to carry and wear... The only concern are some strange drops sometimes and other times, they don't connect correctly... but despite this, I really like them.
I also had B&o E8, and have the Jabra Elite 65t, but finally, the Earin are really good to me and the better overall option... I will possibly sell my MW07 because at home, I already have a 100% sedentary set-up...and need true wireless for on the go purpose only.... if someone is interested, just PM me.