Wideband Lambda's

Probably one for the few mappers that are on the site.

What would be a good, reliable and accurate wideband controller and gauge to fit to a car for use with mapping/tuning and keeping an eye on the air/fuel ratio's?

I have been looking at the Innovate LC-1 and LM-1, these have mixed reviews on the net as regards accuracy.

http://www.innovatemotorsports.com/products.php

Also a few other Austrialian brands
http://wbo2.com/

Innovate are very good. LM2 nice kit.

I have the AEM Wideband UEGO Gauge in my car. Nice gauge and not too expensive either.

Thanks lads as regards ease and accuracy for mappin which would be a better choice