I asked Garmin what the differences were between these products and which I should use with my StreetPilot c330:
- City Navigator Europe
- City Navigator Europe NT
- MapSource Europe City Navigator
- Mapsource MetroGuide Europe
Here is their reply:
MetroGuide Europe would NOT give you turn by turn road routing prompts with the C330...they do not have that built into them.
City Navigator Europe and MapSource Europe City Navigator are the same thing...semantics :-).
The difference between that and the City Navigator Europe NT DVD-ROM product is just compression. The NT maps have the data shoved tighter together...it can make more efficient use of memory. That is the reason it exists. Not all units "get" NT, but the C330 would.
The NT one is actually the way I would go with a C330. It is on DVD-ROM if
you go the DVD way...check PC compatibilty.
And of course the NT maps are on pre-programmed SD cards, and in that there are some individual country cuts. If you needed just France, say, that's more economical and is a lot of the idea behind why those are.