What I'm missing from old Opera: - left "window" opend when clicking on left browser border with RSS and download manager - full support of standards (HTML5?)
What I'm not missing from old Opera: - e-mail client - web e-mail clients now are so good (in example gmail) that there is no need of local software for this
What I like in Otter: - when I use CTRL + TAB then bookmarks are sorted like in old Opera -> oldest opened are first - I love it!!!
EDIT: - Youtube fullscreen is not working - when I deleted duck search engine, otter stopped searching when I was typing search string in address field - helped when I change DefaultSearchEngine to "google" in advanced configuration