The main advantage of NPS is the portability & transparency in the system. The NPS a/c is portable across the country. The PRAN no. once allotted remains valid throughout your life. The entire contribution & other details can be seen by your login.
NPS is a defined contribution scheme, while EPS is a defined benefit scheme.
The additional tax benefit u/s 80 CCD is applicable only if NPS is routed thru' a Corporate, not otherwise. If you are a personal contributor to NPS, it is covered u/s 80C only.
For people looking for hassel free pension, NPS is a beautiful product & must be encouraged at Corporate level also, as putting money early in ones life in NPS will give much better returns thatn EPS. In my previous stint at Hyundai Engg, we had offered this addtional benefit to our employees.
For more details, u may c PFRDA website.