To be honest, I'd prefer 12303 over 12273, as 12273 has less stops but appears to behind Poorva throughout the journey judging by time.
(Duronto has 5 stops - Poorva has 23. If you think about it. it should enough time to overtake, but Poorva remains ahead throughout)
Duronto...
more... also will have dynamic fare, unlike Poorva.
My choice between HWH-NDLS:
1. 12301
2. 12313
3. 12381
4. 12303
5. 12259 (poor punctuality)
6. 12273
For NDLS-HWH
1. 12302
2. 12314
3. 12382
4. 12260
5. 12304
6. 12274