Let me start by saying that I did not have a ride in the first class car so I Cannot judge the journey by anything but my experience. It's the fastest train in this route. So, I highly recommend you to travel from this train. The staff are good. The service is also good.
If you are looking for train journey from Patna to Kokata in night it is good to take this train. This train is always on time you can easily reach early morning, seat is comfortable. Always try to take in A/c. In early morning you can enjoy outside views and also you can enjoy with early morning tea by the vendors. Don't worry about toilet it is always neat and clean.
Simply awesome journey through the train. The train Akal Takht reached my destination timely. It had clean toilets, co-passengers were educated one. Only dissatisfaction which I got was Sealdah Station, were I was looking for waiting single rooms but were available only as dormitories. Seriously annoying, Railways should improve accommodation for passengers. Overall, train experience was really good.
Poorva Express is very good to travel to Kolkata, its a good train. Its nice to travel to Kolkata by this train. It is almost on time and it's nice to travel to Kolkata. We reach there on time and started our journey, we visit all the places of kolkata. It is nice to visit Victoria palace, Science city, Howrah Bridge, Hoogly River, Botanical Garden, Eco park, Eden garden etc.
The overall experience of the train from Patna to Kolkata was very nice and I enjoyed well. The train provides good facilities. The staff members of the train behaved well. I enjoyed a lot. So in my opinion it was a very good trip.