If you can read fairly small print (7.75-point font), the new ESV Concise Study Bible, which Crossway kindly gave me to review, provides an excellent, hardback edition to carry to your Bible discussion group as it features over 12,000 study notes, over a dozen articles on the scriptures and/or Christian life, and loads of maps within the text to keep you grounded in the biblical terrain.
This post on the Bible Reviewer blog tells more.
Mary Harwell Sayler 