I’ve been reading the posts about the Lancair vs Cirrus and have seen comments saying the UPSAT user interface is not as intuitive as Garmin’s.
I use both the panel mounted GX55 and a RAM mounted GPSMAP295 in my TB20 and I, for one, find the UPSAT interface much easier to use. Whenever I’m loaded down with IFR chores and have to make a GPS entry, I always change the GX55 first and catch up with the Garmin later when things settle down. Granted, the 295 is no 430, and its button interface (versus the 55’s knobs) may be a factor, but I also like the 55’s more selective declutter features and soft keys.
IMHO, YMMV, etc.