Electrum for SPV wallets because of its easy to use wallet and interface that sure is newbie-friendly. When it comes to online wallet, I prefer using Xapo than that of blockchain.info, mainly because of its many bugs and whatnot.
When storing large amounts of bitcoin, I use a paper wallet. I generate it via bitaddress.org and generate the keys offline to ensure that the security of my paper wallet isn't compromised.