Among all the colleges you have mentioned, all are the famous colleges as well as the most preferred private colleges in India. Depending on the factors like Curriculum, Infrastructure, Faculties, in my opinion I would prioritise as below:

1. VIT
2. SRM
3. AMRITA
4. KIIT
5. MANIPAL
6. SASTRA.

Now this sequence is as per my choice. If you want to take a decision then I would recommend you to conduct a research by your own then only take decision.

I hope my answer helps. All the very best for your future endeavors!