Near WideBand O2 sensory (Greddy)

[timsiford at hushmail.com]

The topic of WideBand O2s came up on the PROM board of thirdgen and 'Brent' 
pointed out this unit....

http://www.suprastore.com/supra/gredairfuelk.html

Pricing could be as low as $285.

Does anyone have any experience with this unit?  Could someone point me 
towards a source of information that might compare the 'near wideband' to 
something like the NTK WideBand used in the DIY project?  I am truly curious 
as to the linearity (or nonlinearity) of the near wideband as compared to 
the wideband.  Any information or 'point and runs' are appreciated.

Tim