There is no better alternative to blockchain.info when it comes to online web wallets in terms of security and customer service.
I'd say Coinkite would be the next alternative, but blockchain.info is better.
With that said, you shouldn't use it for amounts that you can't afford to lose as you're entrusting your money to a third-party. You should use a hardware wallet or at the very least an offline wallet such as Electrum.