We have installed the EDM-790 and flown about 20 hours so far. It’s pretty cool. Still learning all the features but we are seeing serious fuel savings – about $100 a night. I’m working with GAMI to tweak the fuel flows a bit more. The data download system is the best I’ve seen for any airplane system ever – just plug in a USB flash drive (even in flight) and the EDM-790 asks “Do you want to download?”. Hit yes and boom – it downloads all your flights in about 3 seconds. If only all computer stuff was that easy!