I read on the Gregorian Rite Catholic blog once that most Catholic books being published today are mediocre. I'm inclined to agree. After being burned a couple of times I now know to never spend a dime on anything published by Our Sunday Visitor, or the Paulists.
I mostly stick to Tan and just finished reading one of their publications, a sobering and well written book, Hungry Souls about the Poor Souls in purgatory. It's a a keeper and will stay on your mind for a long time.
I'm now reading Consoling the Heart of Jesus written by a seminarian and Purest of Lillies an awesome book by Fr. Donald Callaway.