As a telrad user, Cartes du Ciel is indespensible to me. It has a feature that I have yet to find in any other planetarium - a telrad that can be placed on the sky chart using the mouse. This option allows me to `practice` finding objects, as I can position the telrad exactly as I would at the telescope, making memorization a lot easier.

Stellarium`s telrad is fixed onto the centre of the screen, which means that you have to move the sky instead of the telrad - not very natural! The same goes for Starry Night (digital download 6 at least; I don't know about the "Pro" versions).