Using most of these on a daily basis. It's great that Apple paid attention to this type of requirement from power users. One shortcut I didn't know about though: option-command-eject (my bluetooth Apple keyboard does have an eject button on it) allows me to put the Mac to sleep within 0.1 seconds. When logging off in the evenings I've always used the menu bar's  -> Sleep, and then carefully not moving the mouse afterwards so that I inadvertently wake it up again.