Im using the full version as I just use it off a laptop. I couldnt justify the GPS component of the Pocket PC when I already had a good GPS.
I have fould the google maps good for areas close up but cant join them to make a decent map. I have been using the lands department maps to make my aerial topos, and have fould they definaly have enough detail.
I mainly use Ozi to see where I have been and to get a good idea of landmarks by putting waypoints on them.
I agree the exclusion zones are near impossible to follow on the maps they currently provide, unless the map follows a road, hopefyully that will improve soon.