There are many wallets that you can trust with Ethereum and MEW is one of the most popular for it. For MEW users, just make sure that you will not log in to any phishing website or any MEW look alike website.
MyEtherWallet is the most popular and trusted wallet in Crypto World and this is the great choice to use.
It is for ETH and ERC20 token but for the "crypto world", there are various coins that has their own wallets too.