I'd love to know what exchange you think is *actually* the best, if not Binance.  There are others I use that seem to be just as good, like Kucoin.  Polo was decent, but they're ditching U.S. customers...so I actually do think Binance rules at the moment.  Yep, some other exchange may take its place eventually but it hasn't happened yet.

Being from the states, I'm really only familiar with a handful of them.  I know there are many in Asia and they might be just fine, but I haven't heard of many of them and I don't know if they're reputable or not.