They have outstanding customer service! I still get a quick response and they answer all of my questions completely. Their website is simple and easy to use. When you have a significant amount of bitcoins, their monthly charge is much less than the cost of keeping it in a safe. I gave it five stars because I didn't have to chat with someone, it was self-explanatory, all the details was communicated quickly and precisely by email. I'm excited to continue investing with Cryptonex for several more years.