I just returned from Oshkosh were I bought the iFly 720 (shane (I think was his name) is one heck of a salesman). Great unit and I am going to enjoy it immensely.
However a big dissapointment was finding that NEXRAD is only available with ADS-B and not through WiFi weather planning. Granted that the data can't be used for short range flying through the weather but it is imperative info for planning purposes. I can currently do that with Garmin Pilot and Naviator on my Android tablet.
I flew to Osh with a borrowed Garmin 496 with XM weather and found the follwoing features useful and hope they make it to the iFly:
Fuel to waypoint or destination calculated with data in flight (time and aircraft profile), AOPA database (this was great for the long trip to find hotels, cars etc), volume control in the nav application (got to be able to mute the music if needed), distance (which you have) and time rings or vector, sunrise/sunset, VNAV widget in main map (looks like a tiny glide slope to let you know you are in the right vertical descent profile, slightly better quality in vector mode graphics (which I use a lot when high and need to decluter.
Just being picky, great unit guys and very happy to have found a G**min option!!
Chris