I love my D180 in my RV, but I never look at it unless I'm setting up the prop or the mix. I think if I were building a kitfox it would be a no brainer to put one in for cost. But I would still have an altitude indicator and speed in steam guage. I have them in the RV and that is what I use for take off and landing for a primary, still after 300hrs I can't use the dynon for that.