I only own a Ledger Nano S but I can tell you it's worth it. My advice is use My Ether Wallet with it instead of the Ledger Chrome app because their app sucks IMO. The Ledger works flawlessly with MEW.
i've questions about ledger nano s, because i dont have and i dunno. whether Ledger Nano S can change address for ethereum?, i mean generate address or only one address? because i wanna know before i bought this hardware wallet.