Another great tip from one of our SlickEdit developers:
Bind the redo command to Ctrl+Shift+Z in CUA emulation. The default binding for redo in CUA is Ctrl+Y, which is both clumsy to type and really not intuitive. Logically, if Ctrl+Z is undo, then Ctrl+Shift+Z should be redo. Doing this will replace the default binding for the zoom_window command, but given the choice, I'll take redo every time.