I can't believe no-one (including me!) has suggested Herman Bavinck's Reformed Dogmatics. Newly translated, this 4 volume set hardly ever mentioned without the adjective "magisterial". Recommendations and endorsements come from:
- John Frame - "by far the most profound and comprehensive Reformed systematic theology
of the twentieth century"
- Richard B. Gaffin - "the most important systematic theology ever produced in the Reformed
tradition"
- Samuel T Logan - "seminal"
- Donald K. McKim - "one of the premier Reformed theologians... his magnum opus"
- Al Mohler - "a masterful theological work"
- Jim Packer - "the supreme achievement of its kind"
- Sam Waldron - "difficult to overstate the pleasure and satisfaction with which I read it"