Both GL Bajaj Institute of Technology and Bennet University are good and well-reputed colleges for pursuing your career in B. tech. The faculty at both the college is pretty good and you won't complain about it. The main thing about comparing 2 colleges are placements and quite frankly, the placement score of Bennet University is a lot better as compared to GLBIT. Companies like Intel, Tata, Foodpanda, H&M, Hindustan Unilever Limited, etc. visit the campus regularly.
All The Best.