VIT Vellore is one of the top private colleges.

According, to Careers 360 it has AAAA+ rating which means outstanding.
Ratings are based on placements, faculty, Cut-offs of national / state level Entrance exams, Accreditation and Reward status and Publication record from Elsevier’s indexing database - Scopus.

If we compare the difficulty level of VIT exam with JEE Main then questions asked in VIT are easy as compared to JEE Main. Questions in VIT are mainly of NCERT standard. 

Good luck!!