I've used it a couple times so far and haven't had any problems. I feel it is a powerful exchange, with the primary disadvantage being the high costs of their commercial service. If you're a more advanced user, you may save a lot of money by using the swapping platform rather than the trading service.
In the last year or two, the exchange has advanced and has become one of the most important exchanges in the world. The user interface is simple to use, and even complete beginners will be able to acquire cryptocurrency using it.
Mainly, as long as you're aware of the fees and the confirmation period required when purchasing larger amounts of Bitcoin, you'll be OK.