ISM is good because its tag helps in getting better opportunities in the future. If you're average at coding, even then do not worry because at ISM you will anyway get good packages. Being a government college, the syllabus at ISM Dhanbad is better.
ISM has a placement rate of 100% for CSE in IIT Dhanbad. If you're planning to study abroad then the IIT degree will matter greatly for admission to any foreign University.
As for BITS Pilani, surely it ranks among the top educational institutes in India for engineering. It is on par with the top IITs and the placement rate is 100% like at ISM Dhanbad.
The campus keeps getting renovated and holds a photographic charm with state-of-the-art facilities. The crowd is amazing as well. You can decide based on your location, future goals, preferred weather if you will- because both institutes are at par with each other.
IIT Tag is far more acceptable than NIT. We generally say that NIT and IITs are similar but in reality, it’s exactly the opposite. The first preference is given to IIT and then it is followed by NIT. If you really want to go for a brand then opt for IIT Dhanbad and if not and really want to be a core programmer opt for IIIT Allahabad.
Let’s take a look IIIT Allahabad (IT) and NIT Bhopal (CSE) as they are almost similar. But besides placements there are some other factors, which one should consider and are as follows:
According to the above statistics, this should be your choice of preference - IIIT Allahabad (IT)>ISM Dhanbad (CSE) >NIT Bhopal (CSE)
Also, if you are opting for higher studies, then Dhanbad has more opportunities than in NIT Bhopal. Labs and infrastructure are better as compared to NIT Bhopal but Dhanbad has an open campus and anyone can enter there. Considering all these factors, the choice should be - Dhanbad CSE > NIT Bhopal CSE. Also, you just can't neglect an IIT tag yourself.
My friend is from IIT Mandi and this is her experience with the coding culture at IIT Mandi.
The coding culture at IIT Dhanbad is also excellent. IIT Patna and IIT Mandi are new but their coding culture is developing at a fast pace.