Just purchased the fill professional subsription, and I love it. Have tried the trial version in flight and the iPad GPS accuracy alone is stunning. Less that a knot difference between the G1000 derived groundspeed.
My wish list.
SARTIME box in the HUD part would be really really handy.
A UTC display alongside the local time display.
A better userguide......maybe I'm just dopey, but I havent worked out how to construct a flight plan yet.