I'll jump in .
What makes you think the Aspen is Archaic Peter? It is only now coming up on its 10th birthday, it is an infant in the Aviation world! Sure it might not be as fast as the computers you have in your home or your iPhone, but its still almost cutting edge for something installed in an airplane. It has no moving parts, and is extremely reliable. In my experience as an avionics technician, working around these day after day, I only saw one Aspen with an issue, and it was the RSM on the tail, a simple replacement and calibration and the customer was on their way. The G500/600 although extremely reliable, averaged a few more repairs, although still very very low compared to anything legacy. Please enlighten us on how the Garmin G500/600 is any less "archaic" than an Aspen tube.