TomTom GO 1.xx is still my favorite TomTom navigation.
Hopefully (most likely not) TomTom keeps updating the maps for the 1.xx branch

TomTom GO 2.xx branch to me looks like a NDS version with the GO branding on top of it. Like GO 2.xx is the NDS for the western market.
Everyone has his own opinion of couse but personally if find the old graphics and UI style as seen with GO 1.xx easier on the eyes and more clear, easier to follow instructions then the new modern graphics and UI style as seen with NDS and GO 2.xx