@Ishu That's quite comprehensive review on both the stock brokers in India: Zerodha and Sharekhan. You seem to have done a lot of research on stock brokers and their services. I am personally more inclined towards Zerodha. Undoubtedly, their services are best as of now. If I have to choose a discount broker, I'll definitely go with Zerodha which I am already doing also. Anyways, all have their own preferences.