I went to KO for the lunch buffet. Food was decent; about average for an Indian buffet. Two major drawbacks were:
Price - lunch buffet was decidedly NOT the "for less than $10." mentioned on this site. Buffet was $10.95; add tax and the I-feel-obligated $1 tip, and you get $13 for the lunch.
Food selection - and this is largely a personal preference issue. Their curried vegetables looked and tasted like they had just taken a bag of frozen veggies and mixed in some curry sauce. They also did not have any paneer dishes; saag paneer is one item I always look for on Indian buffets and it was nowhere to be found. I asked the waiter if they have saag paneer on different days (thinking they might switch some of the dishes around), but he said that they do not put that on the buffet.
On the plus side, the restaurant was not at all crowded at the height of lunch rush on a Wednesday.
Pros: not crowded at lunch time; curried chicken was good
Cons: overpriced; smallish food selection for lunch buffet