I don't usually use any mod tracks (even such nice like Donington), because of the numb feeling in my wheel compared to kunos tracks. I guess this is because of laserscan. Finally tried it and i should say - it is great. I didn't feel much difference with kunos road and the track is pure joy on the new 911gt3r2016.
However, for me the only minor drawback is the quality of trees in the summer version. But winter version is a pure awesomeness, but is the road surface changed? For me it feels like regular, not icy or whatever