To be honest with you guys, i no longer use any dictionary anymore because carrying my mobile phone with just one app does everything for me, so whenever i am reading a book at work i just unlock my cellphone and look up any word on my app dictionary, i can even get examples and translation in my native tongue, and i think that's better than any traditional dictionary book. The benefits that those apps brought to us is that you don't have to carry heavy dictionaries with you whenever you go, because when i was in high school i used to bring them with me whenever i was studying a foreign language and that made me very exhausted because all of the pounds that i was carrying in my back.