This is Vol 2 of James Montgomery Boice 4 volumes on Romans. The chapters are edited for book form of Boice sermon series on Romans. As such this is a readable, well explained and applied with good use of anecdotes of Romans chapters 5-8.
In saying that, because of its size (so far vol 1+2= 1005 pages and only to chapter 8) it can take a bit of perseverance to keep reading.
But I have found it well worth doing so, as there are not many in-depth and detailed "commentary" ( to my knowledge anyway) that is true to the text but written in a down to earth way and therefore very good for devotional reading.