There are a lot of excellent study Bibles out there, bearing in mind that some Bibles these days are joint Protestant-Catholic projects. The best Catholic study Bible available is The Catholic Study Bible NAB Second Edition, which contains marginal cross-references, footnotes and annotations, articles on various aspects of biblical study and - thank God! - a concordance. My next choice would be an Eastern Orthodox Bible called The Orthodox Study Bible with excellent footnotes and annotations referencing the Saints, the Fathers of the Church, the Liturgy, the Church Year and other aspects of the Faith of our Sister Churches of the East - and it also includes lots of articles - but, unfortunately, no concordance, which you can purchase separately (the OSB New Testament has a wonderful concordance).
You can also purchase a single-volume dedicated Bible concordance separately if necessary.
I don’t know why none of the responses so far have not mentioned some excellent Protestant study Bibles. High on my list are, first of all, the Oxford Annotated Bible with the Apocrypha [deuterocanonical books] New Revised Standard Version Augmented Third Edition. This contains all of the study aids for the Bibles mentioned above as well as a concordance and lots of articles on subjects of biblical study. The only other Protestant Bibles I would mention in this connection are the English Standard Version Study Bible, the NIV Study Bible.and the New King James Version Study Bible, all three of which have all the features mentioned above. The only thing one has to watch when using these Protestant study Bibles is that you will be well advised to read their commentary and footnotes through the lens of the Catholic magisterium - and, when in doubt, keep a copy of the Catechism of the Catholic Church handy.
With the Protestant Bibles you will need a single-volume copy of the Apocrypha - the deuterocanonical books of the full Catholic biblical canon.
As far as biblical commentaries are concerned, I would recommend The Jerome Biblical Commentary or the Collegeville Biblical Commentary, both of which are Catholic, or the Protestant/Anglican/Catholic/Orthodox volume entitled The Interpreter’s One-Volume Commentary on the Bible, which also contains commentary on the deuterocanonical books.
Athanasios Scott Tonk