I see that there have been a number of posts regarding docks for the Nexus 7. I am ready to buy one. Should I go for the genuine ASUS dock or is one of the other ones a better choice at this point? I want one that holds it in the "landscape" orientation, not portrait. Do I need one with speakers? I have read criticisms of the audio on the Nexus 7, so if need a dock with speakers, that would be good to know.