There is a shortcut to had a note or highlight a part of the text !
Here is what Bookeen Team wrote on its blog in french : "le raccourci est de poser 2 doigts sur l'écran en début et fin du passage choisi, le texte est surligné et 2 boutons s'affichent avec les options "Ajouter un surlignage" et "Ajouter une note". Et voilà !"
English is not my native language but here is an attempt of translation : "the shortcut consists in touching the screen with two fingers, one at the beginning of the choosen extract and one at the end, then the text is highlighted and two buttons appear with the options "Add a highlight" and "Add a note". Here you are !"
So the problem raised about annotations in GoodeReader's video doesn't seem totally justified.
Moreover, Bookeen Team specified that the Muse has a Carta screen and not a Pearl. Which probably explains why the quality of the screen on the Muse is better than the one on the Ocean (I guess)
I hope this comment was clear enough, don't hesitate to ask further explanations if not