Sir Zai & Omair Masood

[ReN0uNeD De\/!|_]

I am inAS and I want to go to coaching in karachi(gulshan or Bahadurabad) and I've heard from someone about sir Zai and Omair Masood.... Can u plzzz tell me how are both of them..... I really want to get A in AS and i've just taken commerce so my base is not soo strong too...