Actuality: I decided to go with the Wrox Professional book.
Well, as a first book... :)
Everyone buys one ASP.NET book. Then another. Then four at a time. Then Amazon.com gets their second mortgage.
The Worx Professional ASP.NET 2.0 book is good, though I'm not sure it's a great beginner book. Same with ASP.NET Unleashed. Both are long-term books though. The Problem/Solution series are great for those who learn best solving a specific problem, and I usually recommend ASP.NET for Dummies. I still use it occasionally when dealing with new areas. I also like the Programmer to Programmer series.
But, when you find yourself looking for a new book, expect that it won't be your last.
Jeff