I agree with Rampant A.I. and Cato that you should stick to Christianity's heavy hitters if you want the best of what Christian apologetics has to offer. I also agree with Rampant that Craig and Plantinga are an affront to critical thinking and are not to be taken seriously. However, their influence on internet apologists is so pervasive that you might do well to quell your disgust long enough to see what their arguments amount to. [Spoiler alert: Not much, unless you are a connoisseur of desperate sophistry]
One additional Christian I would suggest is Soren Kierkegaard. He wrote voluminously but is probably best known for Fear and Trembling. You'll often see discussions here that involve a non-believer asking a believer, "If you thought that God had commanded you to kill your son/wife/mother/etc., would you do it?" Kierkegaard cut right through the bullshit and confronted the issue head-on. Fear and Trembling is, to me, a terrifying glimpse into the mind of a person -- Kierkegaard's "Knight of Faith" -- who values faith and commitment over truth.
Also, if you are looking for a good history of philosophy, I recommend Frederick Copleston's work, which is especially strong in discussing ancient and medieval philosophy. Copleston was a Jesuit and his religious commitments sometimes color his treatment of certain thinkers, such as Hume, but he is upfront about his biases, and his treatment of philosophers is usually even-handed.
One additional Christian I would suggest is Soren Kierkegaard. He wrote voluminously but is probably best known for Fear and Trembling. You'll often see discussions here that involve a non-believer asking a believer, "If you thought that God had commanded you to kill your son/wife/mother/etc., would you do it?" Kierkegaard cut right through the bullshit and confronted the issue head-on. Fear and Trembling is, to me, a terrifying glimpse into the mind of a person -- Kierkegaard's "Knight of Faith" -- who values faith and commitment over truth.
Also, if you are looking for a good history of philosophy, I recommend Frederick Copleston's work, which is especially strong in discussing ancient and medieval philosophy. Copleston was a Jesuit and his religious commitments sometimes color his treatment of certain thinkers, such as Hume, but he is upfront about his biases, and his treatment of philosophers is usually even-handed.