Over the years, I've owned a couple of different editions of Consumer Class Actions, from the National Consumer Law Center. Although geared towards plaintiffs, defense lawyers will find it useful too. It comes with a CD-ROM and a number of different forms. On many issues, it's just as useful as Newberg on Class Actions. It has a better index too.
Another recommended volume from the same publisher is Unfair and Deceptive Acts and Practices.
The books cost $150 and $130 respectively.