It all depends on what is the purpose of the cryptoinvestor. If it is exclusively about safe storage, then software and hardware wallets will suit. Hardware wallets are more secure because they are not subject to the risks of hacking and penetration of viruses. Among them are Ledger Wallet and Trezor. Also, Cryptonator and Blockchain are the most trusted investors. These purses allow you to safely store funds, but quickly dispose of them will not work.