Hey !

The counselling of IIT is through COAP( Common Offer Acceptance Portal) and that of NITs is through CCMT( Centralized Counselling for M.Tech).

The first round of COAP will start from May 14 and the fifth round is from June 23.

The first round of CCMT starts on May 3 rd and the third round on May 31.Online withdrawal can be done till Jun 7.

The NSR ( national spot round ) for NITs will be published on July 20.

So you will get enough time to choose between IIT and NIT.

Choosing better course and college requires various parameters to be considered.

Firstly your interest is what matters. You have to select the course of your interest also taking into account the scope and career oppurtunities.

If you get top Nits with better placement records and ranking than some new IITs with low records , it would be better to go with NIT.

But there is an IIT tag that you will miss. So the final decision is yours.