As i asked a question, few days back....I myself fetched the answe in comparison between SDAH Duronto & SDAH Raj.
I traveled by Duronto on 5/8/13, & I say that it is a wonderful train. Food, hospitality, timing (reached 15 min earlier), cleanliness all are extra-ordinary. I came back by Howrah Raj (via Patna) today....& I must say that it is a nice train though the cleanliness is not good. Fare of Duronto is much less.
So, Duronto is a good & thoughtful choice.