I have two. I have the Petzold book and the Nathan book.

Frankly, I like the Petzold book. It starts with creating apps in C# before
throwing XAML at you, so you can start with something familiar. It also has
a lot more material in it than the Nathan but. One thing that bugs me about
it is that he has no section headings, so one minute you're talking about
treeviews, and the next, you're talking about listboxes. I wrote in my own
section headings so it's easier to find something then I'm leafing through
the book. He also sometimes kind of goes off on a tangent and then comes
back. But I like the way the book builds as it goes, and you build a lot of
applications before getting to XAML, which I liked.

The Nathan book is very attractive, being printed all in color. It starts
with XAML and pretty much sticks with it through the book. I don't think
it's as in-depth as the Petzold book, but the illustrations are a lot
better. It also talks about 3D graphics, which I believe is missing from
the Petzold book.

Just buy both of them and get on with the reading!!

Robin S.