Problem is whichever one you choose you'll have almost no one to talk to. Network effect is huge for communication tools, which is why Signal wins. Maybe SimpleX though if I had to pick one.

Tks for the suggestion! And you're right... Close friends and family we can still convince, but more than that it's complicated.

SimpleX without a doubt. The others don't come close to SimpleX's privacy-centric design. And SimpleX just had an independent security protocol audit by Trail of Bits. The others simply do not compare.