English dictionary is good paper or electronic good

Electronic is good, easy to query, query speed, the most important thing is light weight, and the complete content and paper exactly the same. And you can skip check, reverse check, multi-dictionary query, and can query the phrases included in the vocabulary book in order to review later, these are paper dictionaries can not do. Nowadays, all the books are e-books, and paper dictionaries are outdated. Of course, electronic dictionaries should be bought in good quality, not the kind of cottage dictionary. I have now completely abandoned the paper dictionary, too heavy, too slow.