which one do you use the most?

ALT+TAB isn't on the list? :O It's the one I use almost always. Or SHIFT+TAB for the Steam Overlay.

Voted for Backspace because I'm always making a typo here or there.

When llama-thread is happening - F5. Backspace if not.

F5? Auto refreshing ftw :P

CTRL + SPACE (autocomplete)

F10 (debug next line)

CTRL +C/V (copy&paste)

CTRL-C & CTRL-V.

CTRL + Z I use alot, too.

Alt - Tab
Ctrl - Tab
Ctrl - C & Ctrl - V

F5 because reddit has been kinda bad at loading these past few weeks