Which wallet would you say is the easiest to use ?
Every altcoin platform has it's own wallet but ERC20 smart contract altcoins have very popular wallet which is called MyEtherWallet and it's only my wallet since before I received my first ERC20 token last year on 4th quarter.
MyEtherWallet is very easy to use as long as you are responsible enough on keeping your private key, MEW is more safe, secure and reliable.