Ok, so I just tried colodax exchange, and here are my first impressions.
Since they have android app, I installed it.
You need to sign up with email and password first and then need to complete kyc and bank verification before you can trade.
Pan card front, aadhar card front and back photos are required.
For bank verification — account number, ifsc code and account statement are required.
Kyc was verified instaneously.
I deposited some ether, it was successfully deposited in a minute or two.
I sold the deposited ether and withdrew the rupee, received the amount in my bank account within 5 minutes.
The experience has been top notch so far!
Wow, thats very fast, both for KYC and for your bank withdrawal.