I'm using Myetherwallet since I started earning coins through Signature Bounty Campaigns, Indeed, it's safe and secure and other than Myetherwallet, I better use hardware wallet like Ledger Nano S to keep my wallet secure and i can hold as many coins as I can.
Myetherwallet is the most recommended ERC20 wallet for everyone, nothing more and third-party wallets although they're promising somehow but it's better get rid of them and try to focus on a single wallet that will give you peace of mind, otherwise it's better safe than regret later.