Which is better to pursue, an MBA in BIMTECH Noida or an MBA in BITS Pilani? I have 2+ years of TCS experience with a 77 percentile.

You have two years of experience in a decent company. I suggest you take CAT, XAT and other entrance exams at least once more before settling for either of these options.

Of these two, BITS Pilani will be my choice as BITS is a more known brand .