May I suggest to the anti GPS brigade that to argue this subject with you is about the same as arguing the horse and buggy vs the automobile.
I have used GPS ever since it came on the market all over the planet in my ferry business. Both the VFR panel mounts, the VFR hand helds and the IFR approved panel mount units.
I found that GPS is mroe accurate by far than any other navigational tool and has a reliability factor equal to or superior to any other method of navagating.
The hand helds are as reliable and accurate as the panel mounts, at least that has been my experience.
So if it is the prefeered mothod that we use for navagationg , why is it not good enough for the sunday afternoon private pilot?
Oh well I guess to each his own.