Coinbene is one Exchange that is reliable for security and stability. Since it was established it has maintained a reputation that makes it highly recommendable.
It is a Singapore based exchange that is fully registered. It supports many cryptocurrencies numbering into about 200. This includes the major cryptocurrencies. There are more than 170 pairs traded on this Exchange.
For users with CONi which is the exchange's currency, they enjoy a lot of advantages in terms of discount. All others are charged a flat fee of 0.10%. For withdrawal coinbene only charges network fee and nothing more.
The exchange go as far as using Komodo based security strategies for it's security. It has succeeded in averting lots of attacks because of this.