If I think Chinese food in Bangalore, I think Chung's pavilion. Excellent food and service, whether you're eating there or getting the food packed...
The only complaints are that it is hard to find till you know where it is. And it can get really crowded
(In the two cases it was full, I actually waited outside and asked the waiter to call me when some place freed up; going to another restaurant was out of the question...)
My personal favourite: Veg Triple Schezwan Fried Rice (a bit spicy for some)