~snip~
The air-gapped wallets also look interesting, but I'm wondering if they might be a bit too much for someone like me. My plan is just to buy some Bitcoin every now and then and leave it alone for a long time.
Do you think an air-gapped wallet is really worth it in that case, or would something like a Trezor Safe 3 already be more than enough for the average person?
Air-gapped makes sense if you want a higher level of security. I'm not saying that
"ordinary" hardware wallets are not safe in creating seeds (private keys), but the difference is that they generate that seed on the device that you will connect online because you will occasionally have to upgrade it (software and firmware) and I always wonder if hackers will find a way to attack such devices remotely in 5, 10 or maybe 20 years?
When you generate a seed on an air-gapped device, it will never come into contact with the internet because you will communicate with the UI via QR codes or an SD card. When you're always offline, you don't have to worry about any remote online attacks.
If money is not a problem for you, maybe it's better to get a
"normal" hardware wallet first, and if at some point you want more security, you can buy something better, or even make an air-gapped wallet on an old computer.
Additional advice: if at all possible, I advise you to buy such a device and have it shipped to a PO Box or some address that cannot be traced back to you. Of course, that would make sense if you paid with cryptocurrency that again cannot be linked to you.
The reason is that over the years there have been many leaks of databases of people who bought such devices, and you certainly do not want to be the target of phishing or even physical attacks.