Get Sandia Rock by Mick Schein. Although the book does not cover all the routes in the Sandias it is still worth having. The other guides are not up to date and MP has better beta. That being said I do have the other guidebooks and still use them.
The Falcon guide isn't very good. Hit me up when you get to town, I don't know all of the routes in the Sandias but would be happy to climb with you. You can also take a look at my books and decide which books would be most useful.