I used to work as a Vastika consultant some time back. I also have experience working with a few Indian consultancies. I've found Vastika to be far better in terms of reliability, meeting their commitments, flexibility, & understanding.

Unlike other consultancy they never treated me just like a means to make a profit. Of course, Vastika is a business and as such they do work to make profit, but they also do value their consultants, listen to their concerns & find solutions to their problems. This is my experience with them.