Oh, Thread is opened, so my 2 cents:
I tried GPSapp every day with new routes (I'm driving much) and have an iPAQ for comparing. Well, the iPAQ does the job better. Today :-). I would really appreciate voice messages and simply a pointer to my destination like:

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I
I
I

Alsong with the voice I won't need many graphical items (but anyway they are nice!).

Rolf