At first I was confused as how autossh was relevant here, since it seemed like a supervisor for the ssh process (from https://github.com/Autossh/autossh). Then I realized that you are probably running ssh (reverse) tunnels. If that works for you, I don't think you should change!

With others, I think its a mixed bag, in no particular order:

* in my experience, opening up new connections in SSH is somewhat slow (compared to QUIC and ngrok). I believe this was due to how SSH verifies each new stream.

* connet (and others that use UDP based protocols) don't experience the TCP head of line blocking issue. This might not be an issue necessarily, especially if you have a good, consistent connection between peers.

* some of the other tools provide much richer interface (compared to raw SSH), like traffic inspection and modification, different security properties, etc

* connet (and others) does allow multiple destinations and sources binding on the same name, so you can have multiple clients talking to a clustered service

This is it off the top of my mind. Thanks for checking connet out!