I loved Mosh... until I started using it. Latency is definitely a big problem for me - even on fast connections. Often keystrokes arrive in the wrong order if you type too fast, making it useless.
Hi, thanks for your feedback! I have heard of this happening with iSSH's clean-room reimplementation of the protocol, but never with Mosh. Please file a bug report at https://github.com/keithw/mosh because we are eager to trace this down. (We have never heard of this happening to anybody, and it should not be possible if all is well.)