Justin White, CCIE #14745
From a newly numbered CCIE (#14745), the IEWB-RS workbook does an outstanding job preparing you for all the tricks that the lab can throw at you. I can honestly say that, after using all 20 labs, there wasn't one **important** area on my exam that wasn't covered in the workbook. Sure, there were a few items that weren't covered, but they were easily found in the Cisco documentation. And yes, there were a few instances where the wording of the statements on the lab were purposefully worded to confuse. But all in all, the IEWB was well worth the investment to prepare for the real thing.