In my opinion, IISc Bangalore is a way better option than IIT Bombay mainly because it offers core engineering in computer science e.g. Linux Kernel Programming. It is true computer engineering. It helps you understand the science of Computer Engineering and develop a strong grasp of it.

Any science be it Computer Science or any other is solely based on concepts and implementation of these concepts is quite difficult. An extensive knowledge of Computer Science doesn’t necessarily ensure great Computer engineering skills. But it’s true vice versa. So by going for IISC, one is surely choosing the path of excellence through the very foundation of Computer Science.

IIT Bombay is a brand that is known nationwide whereas IISc is known globally mainly because of its focus on core and complex concepts in Computer Science. Moreover the quality and quality of papers submitted by IISc is much more than IIT Bombay and this already reflects how successful it is going to become in the future.

IIT Kanpur and IIT Bombay are the top 2 IITs in India with IIT Kanpur giving an edge to IIT Bombay. The only aspect of IIT Bombay that is better than IIT Kanpur is its metropolitan location. In almost every other aspect, IIT Kanpur is way ahead.

• After IITKGP, IIT Kanpur has the biggest campus in India, approximately 1100 Acres. IIT Bombay on the other hand is half the size of IIT Kanpur around 560 Acres.
• IIT Kanpur is the only institute in India to have its own Airstrip, Hangar, Glider pilot licensing system, and National Wind Tunnel Facility.
• The huge Open Air Theatre has the capacity to accommodate 3000 people at a time.
• World-class sports facilities.
• The problems of the students are catered to by the largest counseling service.

IIT Kanpur and IIT Bombay are not even comparable given the advantages IIT Kanpur has over IITB.

No doubt all the institutes you mentioned are excellent in their respective standards and fields. But the primary element that should be stressed before choosing a college is what kind of MBA you are looking for. You should determine the specialization you are willing to go for, the kind of curriculum and crowd you are expecting, and various other factors.

You need to keep in mind that an MBA degree will pose just as a stepping stone to success and cannot guarantee your success. The ultimate determining factor is the level of knowledge you gain and how you perform throughout.

All the Institutes you mentioned are top-notch and are globally recognized knowledge hubs. You cannot make a choice just on the basis of your preference. You will have to work tremendously hard to make it into these esteemed institutes.

When choosing between IIT Bombay and IIT Kanour for CSE, you must decide to go with IIT Bombay for the following reasons:

• There are many students from Kanpur and near Kanpur who choose IIT Bombay because they want to live independently, and develop their personality.
• Kanpur is not as developed as Mumbai, and choosing Kanpur will slow down your progress significantly in some or the other way.
• IIT Bombay is a natural choice for top JEE rankers and if you speak to the seniors or alumni, everyone else will suggest that too. 
• Comparing institutes is not a good idea, but comparing cities is important since you'll be spending about 4 years there. 
• IIT Bombay has better placements, infrastructure, environment as well as faculties. 

Therefore, CSE at IIT Bombay is the better option over CSE at IIT Kanpur.

If you're trying to choose between IISc and IIT Bombay for an MTech CSE, here are some features of each that you may find helpful:

IISc:

• Focuses solely on Masters and PhD programs, providing full attention to these students as compared to IITs where BTechs dominate.
• Is a premier institute for learning Machine Learning, AI, and related subjects like NLP, Speech Processing, Computer Vision, Information Retrieval, Game Theory, and Database Systems from basics which will take you to places.
• Provides exposure to Bangalore IT industry through professor collaboration (also available in IITs).
• Boasts of a big and green campus with single occupancy hostel and students who are more focused on studies as compared to IIT students who are involved in many other activities.
• Hostel, Mess, and Departments are not too far from each other, unlike IIT Bombay where a bus runs from the hostel to the department every 15 minutes.

IIT Bombay:

• Boasts of a diverse student population ranging from Bachelor to PhD, which provides extra enthusiasm.
• Provides a tough competition from bachelor students who will perform more by putting less effort due to their capabilities.
• Teachers at IIT Bombay are known for Machine Learning and related subjects, but from the courses offered, IISc starts with the basics first like probability, optimization, and linear algebra. After studying ML from IISc, the opinion of the author is that IISc has a little extra advantage in that.
• Features varied flora and fauna too at IIT Bombay with a lake, a small hill with national forest on the other side.
• Hosts many events, one of them being Mood Indigo.
• Mumbai is a more enjoyable city compared to Bangalore. Bangalore weather is good throughout the year compared to Mumbai, which is humid most of the time.
• Being in IIT opens the door to any kind of company for placement which BTech students also sit for. So if there's competition, there's also a reward for that.

Ultimately, both IISc and IIT Bombay are top institutes in the country, and the decision on which one is better for you depends on your personal preferences and requirements.