Yes, Indeed! WazirX is the most popular exchange in India but I have serious doubt about CoinDCX. I have read a lot about thier poor service and mismanagement of users assets. I cannot prove it as I am not a user of that exchange.

WazirX on the other hand is a bit costly if you compare it with Giottus exchange. All these exchanges were still active when we as a community were struggling because of RBI ban. They were the ones who started P2P service at that time. They supported the community and now the community is rewarding them with high volumes.