Hi Paul
I've been using it for a while now and find the Real Time add on for GoTo 'scopes very useful, as it doesn't seem to use too much of the notebook resources compared to traditional planetarium programs.
I have found the double star information very useful most recently, as I’ve just started imaging this category of celestial targets.
Link
here.
Cheers
Dennis
PS - I'm on the beta test team for ST3 -just waiting for the CD to arrive from Greg.