Dear Aspirant,it totally depends on your decision but if you need advice I can help you out. NIT and IIIT are renowned colleges and it is better to get a course over there but if you want to go for just CSE or IT then go for the DAIICT seat. I would recommend to check whether based on your rank you can get CSE or IT at NIT/IIIT. If not then make a decision after checking which course you are getting there and would you like to study it. Since it's your career the end decision is completely yours. The summary of my advice is that if you are getting IT/CSE at NIT/IIIT then go for it and if not then make your decision after proper research. Here is a college prediction website to check whether you can get into NIT/IIIT for your desired course based on your JEE mains rank:

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer