I've been using this for a few months and really like it.

Pros:

  - Simple configuration and built-in keyboard shortcut daemon.
  - Performs very well; no animations, nothing to get in your way.
  - Workspace switching is excellent, doesn't use Windows' built-in system, and each monitor has its own set of workspaces
  - Draws a border around the active window.  This is huge.  I can't tell which window has focus without this and it's essential with focus change shortcuts.
  - Can move the cursor to the newly focused window, minimizing mouse movement.
  - Makes me happy.  That's rare on Windows.

Cons:

  - Doesn't handle DPI changes or laptop dock/undock well.  I usually have to restart.
  - whkd gets stuck occasionally and requires restart.
  - Polyform Strict license is a little unusual; I hope the author stays committed.