Thomas,
I abandoned my plans for using the Dynon EFIS because I couldn't rely upon them for delivering a HEATED AOA pitot. These 2 things are important to me. I chose Advanced Flight in light of this. It seems like it will materialize the way I want.
Also, I do have the SafeAir mast! It is a chromoly steel tube that is simple to install and very well welded! The price is right and they answer emails, unlike Gretz. Call me crazy, but response from a company is important to me. I looked at Gretz first and then I found SafeAir.
FWIW, there ya have it!

CJ