You never know with the higher end ones either. I had an 800 one that was a disaster. I had a 1000 one that was a disaster. I had a 1800 one that got drunk, said she was filming me, was screaming insanely loud in a hotel room for me to f her. I suppose these were all my fault. The 800 was black with good reviews. Still, I should have known better than to see her. Higher end black providers have a chip on their shoulder for some reason and tend to take it out on clients. The other two had no reviews at all, I just liked the look.
The only high end provider that I went with in my time with actual full fledged reviews was a massive success. She upped her rates recently and I do not feel like going for another 1800 2 hr venture. Just too high for me. But she was, and I am sure still is great.
The lesson being, when you go high end, unless you are rich, make sure they have tons of positive reviews so you do not waste so much on a bad time like I did.