Ive had the SkyDemon MD since November of last year, wouldn't fly anywhere without it to be honest, not mainly for nav work, but mainly for airspace and NOTAMs, which are depicted visually. I like the way it prints your plog for you and gives you frequencies which could be used en route. Granted the screen isn't that good when the sun is shining on it, so a bubble canopy may not go so well with it. I bought a yoke mount from RAM Mount too, because the sucker that is provided isn't very clever in my opinion. The lads who are in the share with me are against GPS because they are old school, but slowly when I go flying with them they are asking me to bring it with me. It certainly came in handy when I went to Le Touquet recently, especially around the new class D near Manston!
Cheers, Jim
