Blagomix Logatec is a Slovenian track made in good quality for rFactor standards, has lots of details on and off the track. It's similar to Race of Champions track, with that I mean its possible to have 1 on 1 races. I recommend to use slower cars here or middle fast as the track is only 1250m long. Below are two shots of driving A86 mod on this track.
Blagomix Logatec - Download