There is a very good, detailed survey of commentaries, published Biblical Studies Bulletin (which is sent to subscribers to the Grove Biblical series) and available online here. We did a full survey of commentaries on Ephesians some time ago in 1999, and updated it in 2004. Since then Ben Witherington has contributed a volume (on his way to writing commentaries on all the books of the New Testament) and I would strongly recommend anyone adding it to their ‘must buy’ list. It combines comment on Philemon, Colossians and Ephesians as three ‘captivity’ epistles directed at an Asian audience.
Witherington is well known for his use of ‘socio-rhetorical’ criticism, and whilst not all are persuaded of its value, I think it is a very significant approach, particularly for those interested in the application of scholarship in a ministry context. Since this approach focuses on the original impact of the forms of language we have before us, it bridges the divide between ‘historical’ and ‘literary’ approaches to text, and potentially offers a disciplined way of engaging with the formational power of the text.