Which wallet do you use for storing your ERC-20 token?
I personally like MEW because it's very easy to use. Some people like Trezor or Ledger but personally I have no problems by using MEW

In MEW you have complete access to your private keys.
myetherwallet can be used as a main wallet, but nano ledger and trezzor is a swallow that can make your assets safe in long-term storage so using an additional wallet is an advantage.