To add a different point of view, we had a terrible experience with Kate Merovsek. It was a total waste of money.
Specifically, we are a gay couple, and we were required to see her by our RE because we were using a known sperm donor. She was completely clueless about issues dealing with gay couples or sperm donation. In fact, she gave us some articles about egg donation in which she had crossed out the word "egg" and wrote in "sperm".