Binance is one of the top ones that I use too. Bittrex is another old and good one and has the most number of coins available.
Bittrex is a good and big exhange in their era but unfortunatelly bittrex volume exchange are lowed than few year ago.
whales are migrate to binance, and the another exchange with have potential growth in future in Huobi for now, i'm using Binance and Huobi for trading now