nsit is better or aiactr ?
There's no doubt that NSIT is better than AIACTR, but if you are able to secure a seat in AIACTR and not in NSIT then AIACTR being a college under DELHI GOVT. is not bad either. AIACTR gives you an edge over the other private colleges under IPU during placement and education quality.
Qualifying for AIACTR is equally hard as qualifying for NSIT. Belive me my friend, both the exams are not just piece of cakes corresponding to the respective colleges.
The difference lies in the early roots of NSIT being established in 1980s. I bet you 30 years down the lane and AIACTR will be one of leading technological institutes of DELHI comparable to IIITD, NSIT, IGDTUW and who knows maybe DTU too.
All the best for your future, my friend.
Wish me luck too because i am also competing for these colleges.

Altough I have never been in any of the above colleges, the answer that I presented is based on my opinion derived out of 2 years of research through Internet and experience of alumnus of respective colleges.
All the best.

Compare Colleges
College Comparison based on Courses, Placement, Rank, Fee