Hello,
Almost all engineering colleges in Karnataka are affiliated to VTU, notable exceptions being University Visvesvaraya College of Engineering, National Institute of Technology Karnataka, PES University and Manipal Institute of Technology. It becomes more of a personal choice. Many students really like VTU while others hate it. Same goes with Autonomous affiliations.
However, if you are from an Autonomous college you'll be able to crack all types of competitive exams but it is difficult for VTU students to crack competitive exams. The fee structure is high for Autonomous colleges as compared to VTU colleges. VTU has a standard syllabus although it is tough. Job opportunities are better as a VTU Student.
I hope this helps,
All the best
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile