Reposting from the other thread…
The three best:
1) The Douay-Rheims Bible with Haydock Commentary
This version was completed in the mid-1800s by a Father Haydock and is famous for using a tremendous number of quotes from the Early Church Fathers. It is also available online. There’s only a couple of print versions out there, and they tend to be around $100, but it’s well worth it.
2) The Ignatius Catholic Study Bible
Written by Scott Hahn and Curtis Mitch, it is a work-in-progress. The New Testament is almost complete, and will likely be completed by the end of the year. It is currently available in 11 individual volumes for a few dollars each. It is very orthodox, contains great maps, and has several mini-studies on different topics, such as Greek words that are particularly difficult to translate, or analysis of particularly important passages or issues. It’s extremely popular, and many think that when complete, this may be the new standard in Catholic study Bibles.
3) The Navarre Study Bible
Published by Scepter Press, it’s unfailingly orthodox. It contains the RSV version of the Bible, with commentary on the same page AND the complete text of the Nova Vulgate. It’s more of a devotional, inspirational, and prayerful study Bible than one that delves into scholarly issues, but it is virtually of heirloom quality. It is, unfortunately, expensive. It is available in 10 hardbound volumes at about $45 each, or a 12 volume softcover New Testament, or an abridged New Testament. The abridged volume has shorter introductory essays and excludes the Vulgate.
The great thing about these three versions is that they ALL have something different to contribute, and ALL of them are recognized as exceptionally orthodox.