A question to the 'nigels'... what maps do you use? We use Jeppesen and when it comes to the accuracy, general quality and readability of the 10-9s, then I dislike Jepp charts I have to say.
My little airplane sports a map display and sometimes it shows you off the taxiway your supposed to be on simply because the maps are wrong. Same issue - seldom but still - with the Honeywell RAAS - I regret having it installed. If you canīt trust the stuff...