I use alpha Bank. In the Internet Bank can create a map in 1 click, to set her spending limit and she is ready in a minute.
Are tied to PayPal and pay for purchases in iTunes. There were no problems. Safety is also at a high level, if there is suspicious activity, call the employee of Bank and learns from you.
Cards tied to different accounts and do not know trouble.
The only negative, it is necessary to go to the Bank and sign a contract. But other than that, then no problems.