Distance

Main campus is better in terms of opportunities & placement and most important in terns of return on investment.but if u don't get admission there then go for Mait as it is the second best college under IP university.

Hello davinder, welcome to https://shiksha.com; as of I know PGDIR means post graduate diploma in international relations, that is one of the specialization in MBA which normally b-schools have, I am not sure what is PM !, while coming to M.COM in distance that is different than MBA, if you want to go for MBA, forget about M.COM, and select the specialization which you have an interest on that may be PGDIR, I can advice you that think on the course you want to go and get an advice from the college and join.
all the best, reply us on further our people can help you

Hey Puneet, I have a friend who has done MBA after his distance education. And at present he is working for a reputed MNC firm. Let me know if you need more details.

Infact these days pharcovigilance, clinical research is more demanding

Which one u asking about human resource and developemet or buisness development

There are no pros and cons as such. People generally go for distance graduation if they are pursuing any professional certification like you are doing. CS has a wide scope as a statutory designation and also if you prepare for CS, your subjects of B'com get covered into its scope. Therefore I believe it is good to go for it and make your career successful. Wish you s bright future.