i traveled between renigunta jn and new delhi by kerala exp twice, by ap sampark kranti twice and between gudur and new delhi once. so far, i had the worst experience in kerala exp. the pantry is horrible. the food is lifted from some stations on the way and by the time it reaches u it is cold. there is no onboard house keeping(if any, i havent seen at all), no snacks are available except for some occasional tea or coffee, the orders for meals are not taken promptly and the coaches are dirty. this is in much contrast with ap sampark kranti and gt exp. the only positive is that the train is punctual