On Thursday, January 23, 2020 at 5:39:31 AM UTC-8, Jim Hogue wrote:
Any suggestions? Either currently available or coming in the near future (next year or so) would be ok, I am not in a rush. Prefer it would fit in one 57mm hole.

I take care of navigation and tasks with other standalone devices (full on OpenVario with its own vario/STF sensor board, and a Kobo backup) so I don’t really need any nav functions. Above all I want the best total energy and gust compensated technology available, the best to allow me to understand airmass movement while cruising across the full speed range. I want MacReady speed-to-fly function (although I use that as advisory information only, I don’t aggressively dolphin fly...). I also need climb/cruise and airmass awareness audio functionality of course, head-out-of-the-cockpit being best.

I fly an ASH-26E, and I would prefer a system that can work off just pitot and static, avoiding the vertical fin mounted TE probe (which gets hammered during engine runs). This is because thermalling during powered climb can be important to me when flying out of high density altitude airports. But if using the TE probe gets me significantly better airmass awareness in cruise, I would take that.

I am attracted to the FLARM voice warnings that the S8/S10 units give, but I would do without this in order to get the best airmass awareness.

My OpenVario gives me a thermalling assist graphic which seems to work great, but if the new system offers improvement here I would like that also.

Please offer you experiences and knowledge here. Thanks in advance!

Cheers,
Jim J6

I'd also recommend the Air Avionics. It has inertially derived air mass movement, which is how it does the wind calculations. I've seen/used the others and they don't compare. One possibility is the new Borgelt, expansive claims are made for it though the technical side is kept secret which is suspect.

Varios going all the way back to the 302 have MEMS inertial sensors in them, but Air Avionics seem to be the only ones to crack the software problem of using them.