I highly recommend you check out WIRE. Cheers
They seem to focus on bringing new features (like an alien voice FX feature) when they should try to fix the basics first.
The worst thing that happened to me was that UI told me I was in a chat with Alice, but I soon realized I was actually chatting with Bob. So much for E2E...
Now we use https://riot.im. I'm kind of surprised a federated solution offers a decent UX and is less buggy.
Wire is buggy but generally works. The main problem with it is that metadata is collected by default.
I'd say we had a 40% chance of actually connecting a call with Wire. Suddenly there was an update to the app and calling didn't work _at all_ until the next update came (this happened more than once).
A close relative finally gave up and yelled something along the lines of "who the f* uses this POS app", and I couldn't really argue. :)
I'm a firm believer that Matrix is the future. But right now I wouldn't recommend it to anyone that isn't an early adopter.