Jobs at PSUs win over PGDIE at NITIE. However, if you are a fresher and you have to choose one, let us look at both the jobs options one by one.
However, 99.99% of top 100 rankers in GATE either go for jobs at PSUs or opt to pursue M.Tech from institutions like IITs/ IISC. In fact, you will find this in any branch you look at. You can also check the GATE rank of persons joining NITIE.