[ceasesurthinko]

"changing windows and desktops is often slow (especially if there's multiple of the same app open)"

Cmd + ` (key under escape)

[Asraelite]

I'm aware of that and use it, but it's only useful if you're alternating between two or three windows. If you have many instances of the same app then you need to use mission control which has a long animation and requires the mouse.