We had a business dinner at Sultans of Spice and there were people who didn't know much about Indian cuisine. The food was extremely good. Very gourmet, very well prepared and tasty. Being in a largish group, we ordered all kinds of things and all the dishes were very tasty.
The service could be much better. The waiters were not around several times when we were looking for them and once I had to get up and go and find a waiter. Our waiter knocked a drink over on one of our guests and was not too apologetic about it. He was also at a loss as to what to do next and we had to suggest an alternative.
However, overall we had a really good experience because the food was so amazing!