Reddit mentions of Studies in Dogmatics: The Person of Christ

This is a very interesting question. It's not the top 5 Reformed Theologians, but the Top 5 Reformed Theologians you can learn from, which is a rather different question. The answer will depend on where you are in your own spiritual and theological journey as much as it does on the characteristics of the theologians listed. My suggestions, with an eye for gentle introductions to their work instead of throwing you straight into their magnus opus:

• R.C. Sproul: He wasn't a particularly original thinker, but his great gift was making theology accessible to the everyday man (or woman). First read: Chosen by God.
  
• John Calvin: Still the giant of Reformed Theology. He can be intimidating, but it's not as hard as you might think. First read: A Little Book on the Christian Life.
  
• Herman Bavinck: In my mind the most important Reforme Theologian since Calvin. First read: Our Reasonable Faith
  
• G.K. Berkouwer: For decades, his Studies in Dogmatics column and book series was the standard resource for Reformed clergy and laity seeking to understand complex theological topics. First read: any of the Studies in Dogmatics book, but particularly, The Person of Christ.
  
• Abraham Kuyper: The former Prime Minister of the Netherlands, famous for opposing secularism and modernism, and for proclaiming the Lordship of Christ over all Creation. First read: Lectures on Calvinism
  
  It is also an absolute must to read carefully the Reformed Confessions, including the Heidelburg Catechism, the Belgic Confession, the Canons of Dort and the Westminster Confession of Faith and Catechisms
  
  You can also avail yourself of the /r/Reformed Recommended Reading list compiled by /u/peasantcore which has many excellent books.
  
  All of the authors I listed above have passed into glory. If you would be interesting in living Reformed authors, I would recommend, among many others, Michael Allen, Todd Billings, James K.A. Smith, Timothy Keller, and Al Wolters.