I’m going to dissent on the Ignatius product and offer an alternative.
Studying the New Testament apart from the Old Testament is an absurdity and a New Testament only Bible is of questionable value for serious study. It might be suitable for a beginner but the NT must be read in the context of the OT and a more advanced student can only get so far with out the entire Bible.
My opinion is that the RSV-2CE is a step down from the RSV-CE. I realize that others might not share my opinion. Catholic Bibles Blog has some very honest and balanced assessments of the RSV-2CE in general and the Ignatius product in particular.
The Longevity of the RSV-2CE?
[What to do with the RSV-2CE?](“What to do with the RSV-2CE?”)
Another thing to consider is what you will do with a giant New Testament only Study Bible when Ignatius finally (its been years!) produce a version containing the whole Bible? The NT only version is destined for instant obsolescence. Many Catholics will spend another $30 or $40 for the OT/NT version and I predict a glut Ignatius NT only study Bibles for $1.99 at the local Goodwill store a few months later. The honest thing for Ignatius to do is release a less expensive OT only version for those who already have a NT version - time will tell.
The Oxford Annotated NRSV with Apocrypha as an excellent alternative and overlooked by Catholics. I have longed for a 1991 version of the New Oxford Annotated NRSV w/ Apocryphal/Deuterocanonical Books in leather. This edition was edited by two of the greatest scholars of the 20th century, Dr. Bruce M. Metzger and Carmalite priest Fr. Roland E. Murphy. I ordered this in hardcover the other day. The leather versions are more than $120 when they can be found.
Any version of the New Oxford Annotated NRSV with Apocrypha would make a fine study Bible. I think these are overlooked by Catholics.
Someone else mentioned the Navarre Study Bible. This is an investment you will hand down to your children and its orthodoxy cannot be questioned with commentary adapted from the works of the founder of Opus Dei, St. Josemaria Escriva. You can buy individual books of the Bible or the versions below.
[The Navarre Bible - NT Expanded Edition](“The Navarre Bible - NT Expanded Edition”) @ $79.95.
The Navarre Old Testament 7-Volume Set @ $274.65.
My point is that the Igantius Bible isn’t the only game in town and not everyone shares the enthusiasm for the product that people have expressed on this thread. I found the essays to be excellent but eventually gave my copy away.