I have been to the Kangchen restaurant quite a few times. In short the food is very good. Its surely one of the best in Madison. Also the place is newly opened and is not much crowded. So wait time is not a problem.
I prefer the morning buffet at this place. The one bad thing about this place is that options are limited when compared to the other Indian restaurants. So you wont be able to find all your favorite dishes. But the ones they have taste delicious. All the chicken dishes are fantastic. The sweets are pretty good too. The place has a huge adjoining parking lot. So parking is not a problem. The people out there are very courteous.
I will surely be going back to this place.