juvenile and young adult fantasy

What are some of your most and least favorite of the juvenile and young adult fantasy novels published in the last year or so? Harry Potter is on the list, of course, but this is all beyond Harry Potter.

To start the ball rolling, here are some off the top of my head.

Tamora Pierce The Will of the Empress, a book which follows two quartets, Circle of Magic and The Circle Opens.

Jenny Nimmo Charlie Bone and the Castle of Mirrors, book four of the series The Children of the Red King. The first book very much reminded me of Harry Potter, but as the series progresses, it has grown and changed. I actually like parts of it much more than Harry Potter.

Christopher Paolini Eldest, sequel to Eragon. I have to admit, I haven't read either of them, because I started Eragon and was so disgusted by the writing style I couldn't make it more than a couple chapters in. Weak, weak writing and very derivative.

Eoin Colfer The Opal Deception, book four of the Artemis Fowl series. I loved the first two books to this, but haven't read the later ones. I really should, before Wiscon.

Eoin Colfer Half-Moon Investigations, about which I know absolutely nothing. Has anyone read this?

Jonathan Stroud Ptolemy's Gate, book three of The Bartimaeus Trilogy. I haven't read any of these, and I probably should.

Angie Sage Septimus Heap, Book Two: Flyte. I haven't even heard of this author. Anyone?

Okay, let's get the discussion going. Any thoughts? Favorites? Most hated? Why?