What about Route66? Or Garmin, or Co-pilot, or google maps, or bing maps, or .... I could go on but you get the message.
You cant really comment on the functionality of WinMo as you obviously haven't spent any time researching it.
Google Maps? Bing Maps?....errr I thought you wanted real sat navigation.
I can't comment on WinMo because I didn't use TomTom? lol, I didn't know GPS functionality was the shining beacon of mobile OS success.
WinMo is dead dude, move on.