It would be nice if you could get these like the Theological Journals library, in bite-sized chunks. I can pay $50-100 for a 12-15 book collection, but not $1300 all in one drop.

This book was instrumental in helping me write my credo paper in seminary. Organized like a systematic theology, but reads in a much more conversational style. Very worthwhile, especially if you are looking for a Reformed perspective.