I am in New Zealand and have a choice of HERE or WhereiS maps. TomTom maps for iGO are not available.

I prefer WhereiS maps because they have much more detail in the cities, showing walking tracks, private lanes and alleyways which HERE does not. Downside is that only map, poi, hnr and fsp files are provided. This seems to be true also for the parts of Australia (only cities) I have visited.

HERE updates map, poi, hnr and fda with each release but the last issue of fpa, fsp and fjv files was 2013 Q2.

Speed limit data is pretty much rubbish on both so you just have to watch the signs

I will be following this discussion with interest as in a few weeks I will be riding a motorcycle from England to Greece through the Balkans, and back via Italy. I would dearly like to know which maps are best in the countries between France and Greece.