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I just came across your review of the Garmin 530/430. I have to say that I think your view of the GNS530 being "nearly impossible to learn" and "unsafe" is a bit off the mark. I fly the Boeing 747-400 and I find the system logic to be very similar to the Boeing and very user friendly. These units are designed for IFR flying. They do have a few things that are missing like airways and altitudes but they are very good in the IFR environment. If you just have the basic understanding that you can only navigate to a point and not from a point you are halfway there. Remember that these units are over 10 years old now. There was no such thing as an iPad or touch screens 10 years ago. They don't do everything for you but they do what you need very well.