I have Trezor and I'm very satisfied. There is one important thing to remember when you setup the wallet, there is an additional passphrase which is critical.
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Keep it in mind when you order trezor. I can advise you to buy two wallets, one for back-up in case you forget your passphrase and erase your other device, then you can transfer the funds to the a fresh wallet from the backup.
You can setup the trezor without any passphrase too, simply by letting the password field empty.
And instead of buying a second trezor, writing the passphrase on the backup paper of the mnemonic code would also be a viable (and cheaper) option.
That's true, but many people do it and then forget their passphrases. Regarding the backup, it depends but if we are talking about funds like 10k$ and over it's always good to have a backup.