Well, I just posted all this on the Coral Reef vs. Teppanyaki thread, but I will give a dissenting opinion. My family of 5 has eaten there twice in the last 5-6 years and we liked it both times.
Here is our experience from last June:
They start out with some excellent rolls and butter - I know we had at least a second basket of these as we are big bread eaters. Then I had the lobster bisque which was wonderful and I had to keep out of the reach of my 8 year old daughter or she would have eaten it all! My husband and I had fish entrees, I am pretty sure mine was Mahi - we were both very happy with our food. The 3 kids had a pizza, a child's portion of grilled Mahi, and pasta with white sauce. That pasta with white sauce was totally nasty and I told my son not to eat it. He shared the pizza which was more than my daughter could eat anyway. The child's Mahi was the best kids meal I have ever seen or tasted in any restaurant period. It was, I think, 8.95, with the Mahi, mashed potatoes and haricots vert and everything was wonderful.
We were too full for dessert, even though there were some I wanted to try, so the portions must not have been too skimpy. Yes, it was not cheap, but we would absolutely go back. Oh, and I definitely always get tap water in a glass, so they did serve it the day I was there.
I guess it's just one of those restaurants people love to hate. If you have really strong opinions about how you want to eat your seafood, perhaps you will also be disappointed. I grew up in Chas, SC and have lived on the coast almost all my life, but I am not that opnionated about seafood.
Realize some other people really hate the San Angel Inn and you said you like it, so you know that it's "To each his own." If you have looked at the menu, like what you see and want to go, I'd go for it. There are some of us out here who like the Coral Reef too.