I noticed that that AFR meter shootout does not include their test results just comments, and being an Import Tuner article has plenty of inaccuracies and blatantly incorrect statements (a few just in the first paragraph!)
Here's a better more technical review.
Wideband O2 Sensor Shootout! | FordMuscle Magazine
Innovate was granted permission to reprint the article in full (you have to be a paid subscriber to see the entire article on Ford Muscle.com
http://www.innovatemotorsports.com/r...B_Shootout.pdf
Would highly recommend reading it for you Zeitronix/AEM/PLX fans out there.