So, generally speaking, the larger the amount, the more it may make sense to divide it among multiple wallets rather than rely on one device or setup.
I would personally go with that route yes.
Which hardware wallets do you currently recommend for long-term storage (Trezor, Ledger, etc)?? How about everyday transactions? Also, do you periodically replace or upgrade hardware wallets, perhaps every five years, or continue using them as long as they remain supported and functional?
Thanks for the information.
I bought a 'Trezor One' like a decade ago and it's still functionining just fine. It's great for both long term storage as well as daily transactions (all of their devices are). That specific device is no longer being sold, but you've now got: Safe 3, 5 and their recent one the Safe 7. You can compare them here:
https://trezor.io/compareAs long as you have the seedphrase stored securely, and the manufacturer still supports the device with software and firmware updates, I don't see any reason to upgrade or change the device until it stops functioning. It's not something you can resell easily anyway, because no one would want to buy a used hardware wallet (reasonably so).
If you don't want to be put into a situation where your device stops functioning and you have no way to spend your money expect by importing the seedphrase into a software wallet... it could be a good idea to buy a spare device from the start, so if one stops working, you can restore it into the other device right away as opposed to ordering a new one and having to wait.