I think Trezor (bitcointrezor.com) is the best wallet out there, it's BIP32 compatible so you can recover your coins to other wallets when it gets lost or stolen + you private keys never touch internet or anything that might be compromised by malware or other viruses. And unlike other cold wallets you can also spend your coins from Trezor, gotta say I love mine.
Most of then can't buy it because of the price. Ledger is the only direct-competitor to Trezor.
And, if the wallet is connected to internet, it isn't a "cold storage".
If you are going for a hardware wallet, I recommend Ledger. An overview of hardware wallets can be seen here.
Ledger is based on a proprietary, closed source secure chip (NSA anybody?), therefore it is inherently less secure than Trezor. It depends on your level of paranoia thou
Okay, it isn't a cold wallet by definition, but it basically is a paper wallet which you can spend from without exposing your private keys to anything internet connected, transactions are signed in-device.
You are right about the price thou, no reason to protect your bitcoins with a wallet that's worth more than what it holds