Out of all the "premium" train brands introduced in IR(like Duronto, Shatabdi etc), which train brand(apart from Rajdhani Express) do you really think lives up to it's premium status? Please judge with respect to all the factors that make a train journey pleasant like cleanliness, punctuality, food, speed etc. Let's see which brand of premium train is a waste and which one is a hit(please mention if I have missed any)