I've only been once, but it was excellent. Another couple recommended the place to us, and they took us out there for dinner once.
Be sure to try all the different meats and sauces. The variety of what you can get in one sitting makes it worth it alone.
I've eaten a lot of Japanese barbecue and Korean barbecue (I lived in Japan for 5 years and ate a lot of Yakiniku) This one was a step above all the rest. The atmosphere is awesome. The food is awesome.
The waiter we had seemed a little condescending because he was well educated on the food, and he wanted to be sure we knew about it. However, we didn't let that ruin our experience. We just shrugged him off and enjoyed what we came for.
Pros: The food is amazing, great date atmosphere
Cons: Expensive, and a little pretentious