Safe Broker?

Would anyone recommend an honest one with a reasonable brokerage, not necessarily the cheapest?
I want to look at the broker equivalent of Quantum (in mutual funds)

Zerodha – Open Paperless Account

Open online account with Zerodha. Free delivery trading and Max Rs 20 for Intraday, F&O, Currency and Commodity Trading. Intraday High leverage with MIS, CO and BO.

Are you a day trader?