We have a 496 in one aeroplane and it is brilliant but will probably get an Aera for the other. It is essentially the same GPS but with touch screen, slightly bigger display and you can still interface the Zaon to it. I'm not interested in the road map functions, neither am I with the 496 and so was going to get a 495 for the second aeroplane but investigated the Aera in some depth and it appears to offer the same features.