The best wallets options are always paper, hardware, and core wallets in terms of security and control.
However there are no core wallets that store multiple coins, instead there are exchanges and platforms.
Following are some of the best exchanges/ platforms / wallets IMO :
Bittrex
Bitstamp
Holytransaction
Bitpay
Poloniex
Kraken
Exodus
Coinomi
Electrum
Jaxx