You don't have to use Bitcoin-qt you can use Electrum as local wallet
translationdont own your own bitcoins use a third party service that can take the coins..
What are you talking about?
In what way do you not own your own bitcoins with Electrum (or MultiBit)?
With both those wallets, you have exclusive control of your private keys.
If Electrum or MultiBit are "third party services", then so is Bitcoin-Qt.