Well, if you're used to and like Sennheiser's sound signature, you should probably go with something from Sennheiser.
I really don't know a lot of stuff in the higher end of audio, since a lot of it is just straight up out of my budget at all times.
Finding what you're asking for is a bit difficult for me, as when you say "The momentum" it's a bit difficult to understand which ones, as they have true wireless in-ears, normal in-ears, proper...