I have tried some Flight Comp programs and found them to be ok. I can't remember which ones but did a search on ask.co.uk.
I found it ok but is a bit of a pain the the AC as I tended to hit the wrong bits of the touch screen. Especially in the bumpy stuff.
Also the back light is so bright it kills your night vis.
I bought a Jeppesen flight comp. much better.
Don't know about the moving maps but I would guess that if they are like running the car ones you can't see them when the unit is mounted.
This is just my thoughts. I am sure there are some ardent followers out there.