While you're looking for good exchanges you need to do some research. In the basis of volume, circulation, security, wide usage and liquidity. Nowadays exchanges are getting frame because of their community fame.
If the have a strong community, they are ready to put their money in the the new IEO whichever coming from that exchanges.
Best exchanges as my knowledge,
Binance
Bitrex
Bitmax
Etherdelta
Cryptopia
I think you are not updated on exchanges. Cryptopia is already closed and they were hacked. People has lost a lot of funds from this exchange. Etherdelta is another shit exchange and I will not recommend it at all.
Even the best exchange Binance was hacked this year, so we should not blindly trust any exchange.