I flew UA Business from SFO-IAD a few years ago, and the service was great!
I had lots of legroom, and the food is great. It was a morning flight, and I had the fruit plate, with Yogurt, and a bowl of cereal. I can not forget the muffin. Mmm, now thats one of the best breakfasts that I've had on any flight! If you are flying on a 767, 4 of the 6 seats per row are asiles, so you will never get stuck in a middle!
Always fly U N I T E D