Blockchain.info or inputs.io wallet? Which one is the better and why? I'd like to use it on service paid with bitcoins.
Depends what you want it for. I trust TF (this is key to using Inputs, IMO), and I very much like the security features in place in addition to 2FA, like rolling withdrawal limit and pin pad. Great for an online wallet -- I don't feel as secure when using an online wallet with Blockchain.info. But if you want your wallet.dat and private keys, shared wallets like inputs.io won't work for you.