I've seen Sarena at Dreamgirls 3 times. First time was awesome, 2nd and 3rd times actually got progressively worse. I don't know a reason why service would get worse over time rather than better. In terms of her body, it IS smokin' hot. Her face is interesting. I think it's cute in a cartoonish kind of way. She can be coy and sultry when she wants to be. But, I'd say that she's definitely a YMMV girl. I don't think it has to do with chemistry though. I think it has to do with whatever mood she happens to be in at the time. I'd love to catch her on a "good" day, but I'm not going to risk my time and money on a gamble like that. Sugar, Linda, and Sunny are definitely sure things. I don't know if I've sampled Eva before, so I can't speak to her qualities.