Which one is better among MBA and PGDM?

Both are good. PGDM is an Institute autonomous program which is approved by AICTE. MBA is a program which is affiliated to a University. Colleges which offer AICTE approved courses will also offer PGDM not MBA, for example XYZ College is affiliated to ABC University they offer MBA course affiliated

If you're interested in PGDM, do it in a good branded college. Otherwise, do MBA. All the best.