I wish it was possible to have screen-like bindings that don't require explicitly defining them all so that you don't have to unpress Ctrl each time. In screen you can press C-a c quickly but for that to work in tmux you have to add this:
Tried that before and with 2.0 but it doesn't work. You still have to release both 'Ctrl' and 'a' before pressing 'c'. In screen you don't have to and chaining works comfortably.
bind-key C-c new-window