I think the best and the safest should be a priority. Binance is a good exchange and low on fee. Alsa Cobinhood doesn't get a fee (%0).
Binance can block your account, however, Bittrex does, too. I have had similar problems several times, so I believe that a safer way is to use exchangers without registering. Perhaps you need to pay attention to changenow.io. They have a fixed rate, claims are processed quickly and there is no registration. This is one of the options, now there are many exchangers, but this one I use at the moment.