When I was in Hong Kong a few years back, I fucked these two women. If I had stayed longer in HK, they would have become my regulars.
I have had several regular Malaysian prostitutes. Regular here means about one to two times a month. I have called them for a few years and there was one whom I had for 5 years which is more than 50 times altogether.
The China prostitutes only came in recent years. There were many I called once or twice and I also have regulars and favourites. Some of them have already gone back.
For myself the face is the most important factor. If I find the face sexy, I would call her. Whether she would be my regular would depend on the factors I mentioned above.
Here are some faces that I like.