Top 5 Books, and More

A Paratrooper asked me what might be the top 5 Christian books to recommend him. I've excluded reference works. He's not read any of these:

1. Simply Christianity, Why Christianity Makes Sense, by N.T. Wright
2. Mere Christianity, by C.S. Lewis
3. Basic Christianity, by John Stott
4. Knowing God, by J.I. Packer
5. Confessions, by St. Augustine
(6.) Dangerous Duty of Delight, by John Piper
(7.) Celebration of Discipline, by Richard Foster
(8.) The Wounded Healer, by Henri Nouwen
(9.) Wild at Heart, by John Eldredge