I'm using Liquid exchange since its launch in September 2018.
Quoine's exchanges "Qryptos" and "Quoinex" got merged to Liquid.
I used Coinbase, Bitfinex and Kraken before, so i have experience with a few exchanges.
At the launch of Liquid, there were a lot of small bugs and the trading interface wasn't really intuitive. Now, 9 months later, Liquid exchange is my favorite exchange. You have all features in one platform (See pros and cons). Its my fiat gateway now, because of easy fiat deposits. Trading interface is really nice now and is looking very professional.
The app is looking great and its a nice addition to manage my trades when I'm not at home.
I made good experience with customer support, every time i needed support, they responded fast and friendly.
Of course, there are still some cons, but Quoine is working hard to fix these things (for example they are working on a technology to improve withdrawal times, without affecting the security of user funds).
Liquid is worth a try. Some people don't like the design of the exchange, but most of them don't know that you can change the scheme (blue mode, dark mode, light mode) and customize the trading interface completely on your own.
Thank you for reading my review.