Hello, in my opinion, there is no cryptocurrency that has permanent stability. When buying cryptocurrency, you should clearly understand why you are doing it. It can be a long-term investment or a tool for speculation. In addition, it is important to think about your actions in case of a sharp increase or decrease in the rate. You can buy bitcoins with prepaid debit card using the j2tx service because it is a very reliable platform which is very easy to use and has low transaction fees.