Hi,

Some experience with this map, Garmin oregon 600T + latest firmware, GPS and GLONAS on (device accuracy at 2 to 3 meters)

Spent some time in Austria with this map (mostly Pitztal) but went back to my trusted V3 map (luckily I had a backup on my laptop).
Believe it or not, with this V4 Pro map I got a bit lost....
On a lot of trails the new map was off by a lot, even some 50 meters or more, very nice.
On somewhat straight paths the V3 showed the correct path, the V4 showed a route going all over the place .
On one point the V4 based route would have send us of a cliff, you don't want this in difficult terrain at 3000+ meter altitude!
So I went back to the V3 map and recalculated the routes.
Dont know in others parts of Austria but it will be wise NOT to remove your V2/V3 map from your device just yet.

Never seen such a step backwards in quality in an updated map

Hope this helps somebody