Both colleges are good, but if you ask me, GIBS Bangalore is a bit better for placements and overall experience. At GIBS, many top companies like Amazon and Deloitte come for hiring, and the average salary is good—around 9.5 Lacs per year, with some students getting even higher packages. The teachers here are experienced and focus a lot on practical learning and helping you get ready for jobs.
GIBS is in Bangalore, which is a big city for startups and big companies, so you get more chances for internships and exposure. The campus life is also active with lots of events and support.
GLBIMR is also a decent college and has good placement