Ledger Nano S
Summary: Ledger is a cold wallet designed for users who want increased security. The wallet is actually a physical device that connects to your computer and acts as another source of protection. Meaning, you can’t send Bitcoins from your wallet without owning the physical device.
Ledger offers a variaty of products such as Ledger Nano S, Ledger Unplugged (a contactless Bitcoin wallet), etc. The most popular model today is the Ledger Nano S.
Pros: Beginner friendly, very secure, great support.
Cons: Costs money, More security = less usability (this is an issue with all cold wallets).
Summary: TREZOR is the perfect solution for storing a large amount of Bitcoins in order to keep them out of harms way. The combination of world class security with the flexibility of any other web wallet make it ideal for beginners and experts alike. The company has been gaining a nice amount of traction and reviews throughout the last year.
Pros: Extremely secure wallet, easy to use and intuitive interface, supports additional wallets and altcoins.
Cons: High price tag relative to its competitor