I think using even Becker 2007 is sufficient, as long as you supplement it with something else. I would buy a 2011 Bisk book on amazon for 30 bucks or Wiley (I used Bisk) and go through that to cover the material that has changed. When I did my REG exam, there was only like 1 or 2 questions out of new material. The rest of it really hasn't changed much in the past 7 years or so since SOX.
Just make sure you do get some kind of supplement, because honestly Becker doesn't cover everything IMO. It's good to definitely use cpaexamforfree.com and 1 other inexpensive book. You will feel like you are taking a whole different test when you use either of those compared to Becker. And you don't want any surprises come exam day.
REG 05/21 -- 89
BEC 08/26 -- 76
AUD 10/01 -- 68, 81 (05/04/12)
FAR 10/08 -- 86