Instead of recommending any specific institute, there are some myths that need to be debunked first:

• Placements at one institute are better than the other.
• BHU has a wider network.
• IITG has a cooler administration.

You must compare the two courses based on the following features:

• Academic research
• Placement statistics
• Competitive coding
• Open-source development
• Other club activities
• Climate and geography
• Connectivity (and distance from hometown)

If you're specifically interested in CSE, then the first four points are almost equal for both BHU and Guwahati. When it comes to the other points, IITG has a better climate, while Varanasi may be better connected and nearer to your hometown.

So, it's up to you to weigh the pros and cons and decide which institute suits you better. Remember to make an informed decision and choose wisely.

I would recommend you choose IIT over NIT any day irrespective of the branch because it is recognized globally. The quality of packages and roles offered are also better and with the right motivation and determination, one can even change his branch to a better one.

At IIT Kanpur, I would advise you to go for Chemical rather than Civil. BTech Chemical Engineering combined with Masters in Petroleum Engineering is the highest paying bracket in the USA with more than 74000 Jobs available for outsiders in the Middle East, US, and Canada at a five yr median of $ 18600.

Additionally, at IIT Kanpur the ocean of electives to choose from enables you to pursue CS course side by side through certifications in 64/128/256 bit SSL Encryption, Data Structures, and Oracle which have great importance. While CS students can be found everywhere, you will find only a few Chemical Engineers.

Concludingly, it’s best to go for IIT Kanpur Chemical for the long term or IIT Kanpur Civil with a branch change to EEE or Mechanical in mind.

I hope you are not the kind who evaluates and compares institutes solely based on their placement scenario. Here are a few things to consider while comparing CSE at BITS Goa and CSE at NIT Trichy.

• Faculty: BITS Goa CS department has a better and more experienced faculty pool in comparison to the NIT Trichy CS department. BITS Goa has a thorough screening while recruiting and most professors are PhD holders from top colleges abroad as well from India.
• Infrastructure: Both institutes are equally good in this aspect with top-notch infrastructure and facilities.
• Peer group: The crowd quality is also similar considering that NIT Trichy being the top NIT attracts high-rankers while the no-reservation policy at BITS Pilani ensures only the best minds. 
• Brand value: BIT Pilani enjoys a better brand value because of its rich legacy and wins in this aspect although NIT itself is not very bad either.
• Fees: This is where NIT Trichy takes the lead as its BTech one-year fee is only ?1.78 Lakhs (1st Year Fees) while BITS Goa BE first-year fee is ?5.72 Lakhs.
• Placements: BITS Goa again is the winner here although, with excellent coding skills, you can get a great job in any of the 2 institutes.

So, unless you have any financial constraints, BITS Goa is the best choice for you.

NIT Trichy is always considered superior to its counterparts and rightly so. The institute has a record of excellent placements, a competitive environment, and a highly learned faculty pool. NIT Calicut is well-known for its exceptionally good CSE department. 

So, I think the decision of choosing between  NIT Trichy ECE and NIT Calicut depends more on personal preferences than the institute. However you would like to consider the following points before making the final decision,

• ECE is a bit more challenging than CSE in terms of the curriculum and the opportunities offered. However, hard work and assistance from faculty can help you. CSE on the other hand is an evergreen branch that has a record of providing hefty packages and great opportunities in general.
• NIT Trichy has a difficult campus life owing to its extremely hot climate and remote location. NIT Silchar has a pleasant climate with a beautiful lush green campus. 

If you look at the overall picture, both colleges have excellent departments and offer similar opportunities, so the major determining criteria should be your branch preference. If you are interested in electronic systems and communication, go for NIT Trichy ECE but if you have an interest in programming NIT Calicut CSE is better for you.

One of my friends was in a similar dilemma when he had to choose between NIT, BITS Pilani, and IIIT Hyderabad. Visiting the NITs he found out about their poor infrastructure so removed it from his preference list. Confused between BITS and IIIT he decided to consult his cousin in BITS and eventually decided to go for it. Today, he claims that choosing BITS was one of the wisest decisions of his life. He stated his entire experience that I have summarised below in points

• BITS Pilani focuses on the holistic development of its students and its wide range of  clubs, departments, disciplinary associations, and regional associations develop you as a person and not just as an engineer.
• The institute instills a sense of responsibility within you and you become an emphatic part of the society. 
• BITS Pilani gives you the chance to work on interdisciplinary projects with mechanical and electrical engineering students, 
• Here you will see an active entrepreneurship culture and the professors not only motivate but also assist the students in the same.
• The research culture is another prominent feature and my friend won several international accolades.
• You will be surprised to know that BITS is the only private Indian university that is working on sensitive military projects.
• The BITS tag does help in securing good packages but the rest of the journey depends on your efforts, performance, practical experience, critical thinking, and problem-solving skills.

So, every institute be it IIIT Hyderabad, BITS Pilani or NIT Trichy offers its own kind of opportunities, culture, and resources. It depends on you, how much you are willing to make the most out of them.