i am an early user of wire. Logged in few weeks ago just to find out they took my username. Support say non-sense and now they just ignore my messages.
If I could choose, it would be Wire for me, too. Unfortunately, it hasn't got real traction yet.
Wire is definitely my favourite of the secure IMs as far as UI/UX. It's also the one I've had most luck with when referring non-tech family and friends. They didn't like Signal or Riot (for a variety of reasons) but are happy to use Wire.
It looks like you have to pay for Wire. Is that right?
Free for personal account, paid for commercial use. Discounts for edu and NGO.
Also somewhat off-topic, their backend is written in Haskell and on GitHub. Not terribly relevant for the end user, but I found it an interesting choice.