Ref.: GPS, etc..
I've just, since getting PPL, started using a handheld GPS. For me it is useful that it is handheld, since that prevents me from using it as a primary navaid..
I feel confortable with radio aids + DR and ground to map - though that does not mean that I do not occasionally get lost briefly. Most recently last Tuesday near Gamston - but a combination of ground to map + radio aids, and a quick look at the GPS map display for reassurance rapidly reorientated me.
I like to feel that I wouldn't hesitate to call a radar unit or D&D if I were completely lost or disorientated: the fact that there is a human voice of whom I could ask any relevant supplemental questions seems like a major reassurance to me - and a service vital in the extreme.
DRJAD.