The ease of use and how user friendly everything is. If you have any questions or problems they will resolve it within hours. I wish everything was perfect but nothing really strikes me as a negative. The only con i can say about this is there maybe some minor bugs here and there which could be fixed by the developers. But its not something serious just like a couple of glitches. I would highly recommend to anyone looking for a new exchange to trade Cryptos with other cryptocurrencies. It has helped my trading more than all the others combined! Trading cryptocurrencies is a lot easier with this site.