I have been using Sky Demon since September of last year and am very impressed with it. Like Lagentium I use a Ram yoke mount also as the suction mount is a little unreliable. The mobile device is excellent, albeit a little awkward to see in bright sunlight, coupled with the excellent flight planning software I personally don't think it can be beaten on a similar budget.
I especially like the pseudo ILS facility in instrument view i have tried it several times in vmc and it seems to work perfectly.
The battery life is also very good, I have flown 3 hour round trips with plenty of battery life left at the end.
For me however the flight planning software is the biggest plus, visually depicted notams, weather, automatic plog generation etc, an excellent piece of technology and great value for money.
