I am afraid that the exams cover all possible types of verbal reasoning questions so there is no "best type" of one to choose. The Bond books are very reasonable preparation. You will need to look at the GL assessment papers, but I would save them for quite near the exams. They are the format the Sutton exam used to be in but they now write their own. Wilsons use GL assessment papers. I think it is helpful to look at a sample of all the different verbal reasoning papers available as there is great variety and variation within the tests.
This is the link to the information on the website here about the Sutton testshttp://www.elevenplusexams.co.uk/school ... ey-11-plus