Right now I used Kucoin, Stex, Bibox, Vindax and bitforex and more depending on the coins I have in my wallet.
But the useful exchange for me at the present time now was Bibox, this is where I get my profit so far. But to be fair and
careful you must use coinmarketcap to find the legit exchange platform.
You should be very careful with Vindax and Bitforex. Those two platforms are very shady too. First, they promote and carryout scam IEOs and as if that is not enough, they go ahead and lock up your account out of the blue. You will then be requested to fulfill a tiring KYC procedure with the hope that you give up, and they take over the funds in your account. Just head over the the Scam accusations board to see a full picture.
Bitforex seems to be safer, and I haven't had any problems at this time, so I use it generally. Of course, there are many other exchanges for people to choose, but it is best to use only the popular exchanges that investors choose to use. I still prefer to use Bitforex, Bibox, Binance, Huobi because these are the only four exchanges that have followed me for a very long time.