I much prefer the flat look, because I've always leaned toward modern design -- clean lines and images. I don't need an ebook to mimic a print book or digital notes to mimic a paper notepad, for instance. And I've always found the Newsstand and iBooks bookcases amazingly cheesy. But I won't judge the new iOS until I get my hands on it. To me, great design is always a plus, but not at the expense of usability. And I judge usability hands-on, not by reading or hearing about it.