I am not to fond of hardware wallets for long-term storage, because they constantly need firmware upgrades and some of these upgrades can be tricky, like we saw with Ledger a while ago.     

I like to store large amounts on laminated Paper wallets and I make sure I make several copies and store them in different locations. I bought a cheap computer and printer and I printed 1000s of paper wallets and then destroyed the equipment, so nobody would ever be able to recover anything from those devices.