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.
Ofcourse majority of us use MyEtherWallet because this is the most famous and popular wallet backed by ethereum.though i also used trezor for security purposes i am always having a second opton for plan B so incase MEW fails atleast i have another one to safekeeping my ERC20 /tokens
If you are already having a hardware wallet then it should be your priority over MEW since hardware wallets are not hackable but MEW can be hacked through phishing and close sites so you have to use HW for all the storage purpose and use MEW as secondary option like receiving tokens from airdrop and bounty programs.