Best Bitcoin Wallet

Since the introduction of Bitcoin, an online payment system, in 2009 several digital wallets have been created. Every wallet has distinct features. A paper wallet is not connected to the internet and for that reason is hard to hack.  Digital wallets on the other hand have been created for the Windows, Mac OS,  Android, iOS and the World Wide Web.  Some wallets can hold various digital coins.  Indeed, to determine which bitcoin wallet is the best is not an easy task. Support for each wallet is shown below.

Wallet / OS	Windows	Mac	Linux	Android	iOS	Web
Bitcoin Core	x	x	x
Electrum	x	x	x
mSIGNA	x	x	x
Multibit	x	x	x
Armory	x	x	x
Blockchain.info	x	x	x	x	x	x
Green Address	x	x	x		x	x
Hive		x		x	x	x
KnC wallet				x
Mycelium				x
breadwallet					x
Bitcoin wallet				x
Trezor
BitGo						x
Xapo						x
Coinbase						x
Coinkite						x

Desktop wallets have a big advantage over web wallets: you control the private keys.  But, unlike web wallets they are not accessible anywhere.

Which do you think is the best wallet?