Let me try again to enlighten those of you who may be stuck in the ab-initio flight training mindset.
When you plan any flight you use " ALL " information and aids available to you for the planned flight.
Some of us fly in areas that just will not allow navigation by reference to a map. I defy anyone to map read in the Sahara desert or over the open ocean.
Last week we flew from Seia Portugal to Bordeaux France, in addition to VOR we had a panel mount Garman 430. I " Always " run two handheld GPS units, a Lowrance Airmap 300 and an Anywheremap running on an Ipac computer.
The aircraft was new to us and we had not tested the avionics so we flew VFR.
We also had two maps that we were monitoring for added situational awareness.
However the bottom line is of all the means we had to determine where we were and where we were going the GPS receivers were the most reliable and accurate...Period...
Having said that you should of course " always " cross check your position and where you are headed by reference to your map..
Have fun.
Cat Driver: