Banner of Truth "Puritan Paperbacks" and Reformation Heritage Books "Puritan Treasures For Today" are great starting points.
In terms of other Puritan sets, Richard Sibbes is a beloved Puritan. His complete works will nourish and encourage your soul. Thomas Watsons Body of Divinity is a must read. It is 3 volumes in the Banner of Truth ed, 1 volume in SGCB ed. The works of John Newton (4 vols) is a work that will bless and nourish your soul. You will also be blessed by the works of John Flavel and Stephen Charnock.
The Dutch Second Reformation is the Dutch equivalent of Puritanism. The Spiritual Life (Vitringa) and The Path of True Godliness (Teellinck) will help you develop a spiritual and rick godly life. Both these two books go nicely together. Jerrod mentioned Brakel's work above. Brakel is also a fine example of the Dutch Second Reformation.
I believe it is spiritually important to read books on Puritan meditation. Joel Beeke's "How to practice Christian Meditation" is a good starting point. I also love Solitude Improved by Divine Meditation by Nathaniel Ranew. This is a very thorough work. Puritan Publications publishes a great selection of books on Biblical and Puritan meditation. One of the great classics is Thomas Watson's work
The Saint’s Spiritual Delight, and a Christian on the Mount
The sister Ministry of the Puritan Board, Puritan Publications, has a great collection of Puritan Books for sale. Go to Shop Book Categories on their
website to search for them.
For a modern day Puritan, I love the works of Martyn Lloyd-Jones.