I am periodically asked about good resources that will help someone to gain a proper dispensational understanding. I would strongly recommend S. Lewis Johnson , a former professor at Dallas Theological Seminary, in this area. His online sermons are available (see especially The Divine Purpose and Eschatology). I often find him to articulate what seems to be the most clear-headed combination of biblical theology and a dispensational hermeneutic while also recognizing the very important covenantal character of God and framework of Scripture.
I like to say with John MacArthur that there are various forms of dispensationalism that “ought to die,” so in that sense I am a somewhat chastened dispensationalist. But I also believe that there are biblical truths that a proper understanding of the dispensational framework of Scripture helps us to see.
Many times critiques of dispensationalism miss the mark through misrepresentation. For an intelligent and honest attempt at a critique of dispensationalism by a non-dispensationalist see Vern S. Poythress in his book Understanding Dispensationalists.