I'd always used Ctrl-a in screen because it was the default. When I moved to tmux I just moved it there, but tmux lets me send the Ctrl-a key sequence through to those apps.
So if I want to go to the beginning of a line in Bash, I just press C-a C-a (which actually works if I hold down Ctrl and press 'a' twice.
Not a big deal at all, and since I remap Caps Lock to Ctrl, the command combo is right on my left hand. (I slide my hand over a bit as if I were playing guitar or piano, rather than stretch fingers, so pinky on CapsLock, ring finger on a.)
So if I want to go to the beginning of a line in Bash, I just press C-a C-a (which actually works if I hold down Ctrl and press 'a' twice.
Not a big deal at all, and since I remap Caps Lock to Ctrl, the command combo is right on my left hand. (I slide my hand over a bit as if I were playing guitar or piano, rather than stretch fingers, so pinky on CapsLock, ring finger on a.)