I think at the moment a good exchanger can be considered Bitfinex. Yes, earlier they had problems, but since then much time has passed and they came out of the situation victorious. They have a headquarters in Hong Kong and therefore are not afraid of regulation by the government. Their only downside is that they do not present services to the citizens of the USA.
I would agree that bitfinex is now rather useful, fast, fees are low and, at least I hope so, it's a good place to keep coins at. Yet, of course, I wouldn't use it in case the coin can be traded on bittrex. I use it only because I keep my IOTA there. Liqui exchange also seems to be okay, even though there've been some scandals with scam-like situation. Again, I use it only for the coins not listed on bigger exchanges. I don't remember it's fees but I believe they are something like bittrex has which is very low.