KeepKey is definitely the best hardware wallet for security.
Anyway, the most secure wallets are hardware wallets. I use it personally and it is incredibly good. It uses a special protection system against hackers. The only downside to KeepKey is that you cannot carry the hardware wallet with you as it is big and heavy. Desktop and mobile are supported. Its use is very common. Especially medium and large sized investors prefer KeepKey. Because cold wallets are always safe and completely under your control. But if you lose the wallet you will be in big trouble. KeepKey security measures are so advanced that some people compare KeepKey to banks. It also has a system protected from virus systems. After downloading Google Chrome, you need to simplify the use, add the KeepKey extension.
Although it seems complicated to use, it is very simple to use.