frankly, wallets "best" is often derived from the preferences of each user, and you can not generalize "best" to choose a nice purse. But if you want to have a lightweight wallet that does not consume much space and does not spend a lot of your bandwidth by downloading the entire block, you can always try and use HD wallets like electrum and multibit. For enthusiasts and developers or for those who want to create a knot, getting a Qt client is an important part of it. For people who travel and like to shop with their coins, I recommend you to use Andreas Schildbach's Bitcoin Wallet because of its reliability and just get the job done: save, send and receive bitcoin.