IMO best way is to have combo like Trezor + cryptosteel.
Trezor gives you access to your coins and make it hard for hackers to steel it.
And cryptosteel is good for storing recovery seed somewhere this one is fire proof and gives nice protection.
That way it is not bad, but do you know Trezor + cryptosteel has a weakness too, maybe you do not know much and deep about Trezor + cryptosteel
There should be read on some of the widely scattered web, but for that Trezor + cryptosteel was not bad either