I have forwarded the request to our community and hope that a buyer can share his or her experience with this.

I tried them out in a shop and bought them. They sound very natural, not very bass-heavy, bordering on flat. I like it because I have the Momentum Over-Ear and it's a bit dark and bassy. I now appreciate the contrast between the two. Unfortunately, my model has a quirk, because the right earphone produces a scratching noise at low frequencies, once perceived can no longer be heard away. I wrote to support and apparently it's a software bug that will be fixed in January. Wait until then, otherwise it will be returned as a warranty case. The error seems to be known. (https://www.reddit.com/r...)
I would therefore wait a little longer before buying.
The price is already high and borderline in relation to what is delivered. But I haven't tried any competing products because I'm a Sennheiser fanboy ;)