I've only used my Pilot 111. I think it's a great piece of kit, with perhaps its major limitation (which in the Chippy is also an advantage) of small size. The sceen is small and can look 'crowded' (but you can quickly and easily zoom in and out), so it needs to be mounted fairly close to you.
10 hour battery life on Duracells is entirely realistic in my experience.
The database is excellent. Good topographicla map features, airspace, airfields, beacons, reporting points etc. And it's dead easy to put in your own waypoints. Using the exisiting waypoints and/or your own, you can store routes, which as well as being able to be activated when required, can be revrsed (for coming home). Airfield info includes frequencies and runway layouts.
The main problem with it is that it is so good, and so easy to use, that one is tempted to rely on it too much. That is a major danger. But it's nice to be able to give accurate estimates of your next waypoint to ATC!
SSD