Today I got tangogps & gpsd to work on neo... and it is indeed a huge step forward from pygps. It can download maps from net, and can cache it on disk. Openstreetmap support comes by default, and on-disk cache format is compatible with that used by taho_import which makes batch downloading easier. I'll do good testing tommorow.

Another useful piece of software is CheckFastCharge .. which makes neo ignore USB specification and actually charge the battery. (One line patch removes annoying "confirm four times you really mean it...)