HitBTC has been part of the cryptocurrency community almost since the beginning, giving it plenty of time to iron out any issues with the exchange. It also has a lot of useful features, such as numerous trading options and tips, plus a user-friendly interface.
Some things to bare in mind are the fact that some users report slow withdrawal times and the verification process can be slow and cumbersome requiring scanning and sending of personal documents. There are also some bad reviews online left by HitBTC customers which mention problems with customer support with extremely long waiting times to problems such as withdrawals etc. Overall, HitBTC is possibly worth consideration if you are looking for a well-established exchange with high volume and liquidity or need access to an API. Customer support certainly seems to be the area where the exchange is lacking.