I came to know about Backspace from a friend of mine studying in IIMK. While many institutes exist to coach students for GD-PI, I was told that this one conducts highly personalized interviews and offers non-generic, actionable feedback.
I had soon found it to be true upon joining Backspace. I still remember my first interviews with SRK and PPD. SRK has this knack of asking what I call the 'checkmate' questions and putting the candidate in tricky positions. In his interviews, you will find yourself starting smartly but end up contradicting yourself. And you will learn. Every interview would be a lesson by itself.
PPD sir is an excellent teacher and a great observer. It was his stress interviews that helped me face the panels of IIMs with ease and confidence. He manages to make you think about your mistakes and not take yourself too seriously - both at the same time. I used to spend time introspecting after interviews with him.
I owe a good part of my success to the Backspace team. Thanks!