I bought the pocket Flymap, and still have it tucked into my kneeboard.
It's an excellent bit of kit. I like the quality of GPS reception, the course download, the symbology, and the danger area warnings.
If the battery lasted more than about 90 minutes, the company ever provided chart updates, the Pooleys pages were actually large enough to read, and it didn't change view whenever I accidentally brush it with my sleeve, it'd be nearly perfect.
Apart from turning the screen brightness down so far that you can barely see it, has anybody developed any good strategies for extending battery life? For flights longer than about an hour, I've taken to just turning mine on for a few minutes at a time when I've got fiddly bits of navigation, which is not exactly satisfactory. It turned itself off the other day in the middle of a 50 mile sea crossing, which was irritating (yes, I was using other navigational methods so safety wasn't impaired, but it was still irritating).
G