I currently keep mine in a blockchain.info wallet as it was recommended to me a while back. I would certainly be interested to hear if there is something more desirable though.
The QT wallet
What makes this a better option in your opinion? Not questioning your decision but I would like a bit more information though

I tend to use the QT wallet because it is the wallet type that is used for every other coin as well. If you learn to use the QT wallet and its features for backing up your coins, you will understand how to back up any altcoin you may obtain.
Also the QT wallet references a copy of the blockchain that is stored on your hard disk. It is not connecting to a server to access the blockchain. Regardless of the details of the argument, connecting to a server cannot be more secure than simply having the blockchain on your disk.