Everyone should have at least 1 Bible on their shelves! Why not 2 or 3? The more translations of the Bible you own, the more insights you are likely to gain by comparing the different ways in which the same passages are rendered. If you can read more than 1 language, it is especially useful to compare translations in multiple languages.
While there are literally dozens of English translations of the Bible (and most of them are quite good), you cannot go wrong with either of these:
Catholic Study Bible - this is the best scholarly edition of the New American Bible (NAB) translation that all Catholic churches in the U.S. read from in their liturgies.
New Jerusalem Bible - a superb translation reflecting top biblical scholarship; includes excellent notes.