I have used it for deposits and withdrawals, although rarely but over a long period of time and the reason I chose that one was cause they had a reliable (at the time) audit of all funds after the Mt. Gox fiasco and ever since then I have never had any issues with them.
But of course beware the risk of having another party hold your currencies.
Thanks for sharing. Will check them out, however the regulations in Germany are quite different from the rest of the world and it has to go through bitcoin.de