Would like recommendation on best exchange to trade on and reason why you believe the exchange is better than others?
Poloniex is one of the best exchanges to trade because the fee structure is very less when compared to Bittrex or Binance and they also has no ID verification upto limit of $2000 perday.So it is bet for small traders to trade anonymously.And almost all the coins are available in Poloniex so it is best in my opinion.
Poloniex was best earlier but now most of its users have started shifting from it to other new promising exchanges.They complain that poloniex has very poor customer service and they don't reply to their queries.Entry of new exchanges is a good progress in this field as it would help to reduce the dominance of big exchanges thereby providing users multiple choices and a healthy competition.
We could see most reputed exchanges lasting in US and even new genuine exchanges too landing in US.SEC admitting in favor of crypto currencies has added much confidence to exchange creators in US.The link below here down could also be checked as new exchanges seem to offer added benefits to bring new customers to their platform.