Its human nature a person having a lot of money is always afraid of losing it even if it is stored in banks. New wallets are coming up rapidly in the market it is always hard to make a decision which wallet is more secure, but don't trust them, buy a hardware wallet like Nano LedgerS it is not much costly & its code is also open source & audited so it can be trustable. For the coins, not supported buy Nano Ledger wallet always store that coins on their native official Desktop wallet & avoid mobile & web wallets.