Just my 2 cents on Dynon, but I would if at all possible go with the Dynon Skyview rather than the D180. Skyview is the far newer and current technology and is much more likely to be supported with frequent updates and firmware for many years to come. Don't get me wrong, Dynon is a good company and I haven't heard any rumors of the D180 being abandoned, but when I was trying to make this same decision 6 years ago a Dynon sales rep told me basically what I said above. Face it, we all know the inevitable nature of the fast moving electronics market.