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.
Most likely, MEW wallet is like the central market of altcoins. They exchange their coins into Eth and converts into others to invest to. It's worth a try. Just remember, don't do anything stupid on your private key.