I have been using it for approx 16 months now. Before they put the 10k limit on registrations. They have not had any significant problems for us traders. I have been a really big fan of the team but don't agree with some of there ideas. <br/><br/>The support never really disappoints me. They have improved the support side 5x as compared to 16 months ago when I signed up. <br/><br/>If you are a professional trader and really want to enjoy the best features,support,coins in the market then go for Bitfinex as an added bonus you will get very high liquidity for your investment.