>The suspend is deep enough that I don't think there's a lot of power savings from powering it all the way off.
For what it's worth, on my desktop I clocked 'off' at around 0.2W, and standby at around 0.5W IIRC (actually, they may have been even closer). This is after suspending in Windows, but presumably Linux would be leaving the hardware in the same state (?).
I was pretty impressed by this and hence basically never turn the thing off now. YMMV, etc.