Let's discuss one more aspect which is privacy.

As a disclaimersdisclaimer, I will be comparing a HW with a Tails installation, provided that both are configured properly and all human mistakes are avoided.

If you buy a HW you link your order with a receiving address.
It's not a huge deal for most people, but there will always be someone who knows that a Trezor 3 was delivered to the address XYZ in New Zealand. Now, the address XYZ can be a temporary mailbox and the recipient's information can be fake. In that case the only real link between the selling company and the recipient will be the payment process. One can use a temporary pre-paid card (there are various sites that sell this type of cards). Or can also use some privacy-focused cryptocurrencies like XMR.

If you buy a USB and download Tails, information can still be leaked, but there is no evidence that you purchased the USB or that you downloaded Tails for financial usage (bitcoin).

Let's discuss one more aspect which is privacy.

As a disclaimers, I will be comparing a HW with a Tails installation, provided that both are configured properly and all human mistakes are avoided.

If you buy a HW you link your order with a receiving address.
It's not a huge deal for most people, but there will always be someone who knows that a Trezor 3 was delivered to the address XYZ in New Zealand. Now, the address XYZ can be a temporary mailbox and the recipient's information can be fake. In that case the only real link between the selling company and the recipient will be the payment process. One can use a temporary pre-paid card (there are various sites that sell this type of cards). Or can also use some privacy-focused cryptocurrencies like XMR.

If you buy a USB and download Tails, information can still be leaked, but there is no evidence that you purchased the USB or that you downloaded Tails for financial usage (bitcoin).