I think one of the best wallet for ethereum is MyEtherWallet? MyEtherWallet.com
yeah, myetherwallet is the best altcoin, MEW wallet can store various altcoin so this wallet is very often used.
Yep, myEtherwallet is the most used for ETH based coins. I suggested this wallet to my brother and now he is also using it. I knew that this wallet was a very good one because it lets you keep the keys so its harder for hackers to steal it actually its all yours.