both r good only
just 5 hrs extra diff if u board jp-puri exp , but u must take link train if u want to catch purushotam
purushotam has lhb rakes , route is conjested one .
i say go for this ju-puri exp if tkt avl route is free ,y taking link train to catch purushotam that too...
more... again u must travel from old delhi to ndls