Hello aspirant,

NITs, IIITs and Cftis all the three institute are the best and one get admission only on having a very good rank. Now coming to the preference you should first go for NIT's and then IIITs and then GFTI's though there are some exceptions as some IIITs are more better than the NIT's and same some CFIs are more better than the IIITs so it also depends which nit, IIIT or CFI you are choosing.

Hope this helps

If any queries feel free to ask

All the best!!

Regards