See this post for Scot McKnight's recommendations concerning commentaries on Ephesians. McKnight lists:
Markus Barth: Ephesians: Introduction, Translation, and Commentary on Chapters 1-3 (Anchor Bible, Vol. 34) and Ephesians: Translation and Commentary on Chapters 4-6: Anchor Bible 34A (Anchor Bible).
Andrew Lincoln:Word Biblical Commentary Vol. 42, Ephesians .
Ernest Best: A Critical and Exegetical Commentary on Ephesians (International Critical Commentary) .
Klyne Snodgrass, Ephesians: The NIV Application Commentary.