If your CIBIL is more than 750, don't bother with any other bureau at all. This is my personal observation. My Experian hasn't fluctuated drastically most of the time, but I have surely experienced it once only when a debit card EMI got added to the report. Since then, I have a PL active from CRED cash and it didn't react a lot. After that, it has been pretty stable irrespective of the cards added to the accoount. CRIF is a totally different story.