I have always enjoyed the BECNT series as I believe the format strikes a good balance between technical and intermediate levels of discourse.
Also, Moo's stellar work in other commentaries, particularly Romans (NICNT), makes this a must-have.
Here are some of the particulars:
Release Date: July 2013
"In this addition to the award-winning BECNT series, highly regarded New Testament scholar Douglas Moo offers a substantive yet accessible commentary on Galatians. With extensive research and thoughtful chapter-by-chapter exegesis, Moo leads readers through all aspects of the book of Galatians--sociological, historical, and theological--to help them better understand its meaning and relevance. As with all BECNT volumes, this commentary features the author's detailed interaction with the Greek text and an acclaimed, user-friendly design. It admirably achieves the dual aims of the series--academic sophistication with pastoral sensitivity and accessibility--making it a useful tool for pastors, church leaders, students, and teachers."