When the editors at Oxford began compiling the first edition of their English dictionary in the mid-19th century, their intention was to create the most comprehensive & academic such publication to date. By the time the eventual ten volumes had all been published in 1928 (originally four volumes), and indeed in the years since, this had arguably not been surpassed.
The dictionary, as the English language, has constantly evolved over time, keeping up to date with changes in word meaning, and with new words being constantly added all the time (for example, I don't imagine the first edition contained an entry for "Internet" or even "Television").
The title of this latest "concise" edition should not be misleading. Unless you need a full page for a definition, this edition should be sufficient for most needs. Its layout & broadness of definitions keep it head & shoulders above the rest, and have done since the introduction of the concise edition, beating off would-be contenders (such as the, admittedly excellent, Collins edition) for the crown of world's most popular.
The only criticism I could make of this is that this "concise" edition is perhaps not concise enough for the casual, lazy, user. However, if you want an up-to-date, definitive (who hasn't heard of the Oxford English Dictionary?), value for money and consice (enough) resource, this is the one to go for.