I just ordered A Fine Line by Melody Crust but it is not a pattern book it is a book on quilting techniques and inspiration. I love it. I got it on Ghost Rider's recommendation from another thread.
For patterns some of my favorite "go to" books are 101 Fabulous Rotary Cut Quilts by Judy Hopkins and NAncy Martin. I also like the book Quilts! Quilts!! Quilts!!!
Back in November I also got a bunch of books for my birthday. 2 of them that have quite a few patterns I want to try are Stellar Quilts by Judy Martin and Crazy for Scraps by Sally Schnieder. The scrap one has 19 patterns but only about half caught my eye. The Stellar quilts book has some gorgeous quilts but the patterns are very challenging.