This is very helpful to all newbies who are thinking what wallets are safe and what are not. I use myetherwallet at this moment because I don't have enough money to buy an hardware wallet. Maybe in 6 months or more, I will buy my hardware wallet if I have some money to buy for it. Hardware wallets are the best wallets for me but make sure buy it at the official website. There are some news saying that their coins were gone because the old owner retrieved it using the keys. Be careful when buying hardware wallets.
Cold wallet is very safe, but the cost is high, the ease of use is poor. However, like the traditional Armory, it is generally not a small cost to find a non-networked computer dedicated to installing an Armory offline terminal. If the cold wallet will be installed on an idle old phone like a wallet, it will not only cost a lot less, but also be convenient to use.