I currently have Briar and it works pretty well, however I later started using SimpleX for my family use, and for a Bitcoin Study Group I have with some friends. We tried Oxchat but it didn't convince us. Until now we use Simplex.

I must add that I always found the option of sending SATS via Oxchat fascinating, just for that reason, for me it is the best. But its interface was still very rough.