2850, in particular is better suited for travelling with family till Nagpur/Bilaspur, Since 01/08/2010 it is running on time, u need to check with the toilets in the train, cleanliness and water onboard, trains clerk can be contacted if you have any issues. Remember to wipe the window glass from outside and Inside(AC 3-tier AC 2-tier windows), it is atleast better than other trains which go till West Bengal !