wideband A/F, which one?

[whytry]

From everything I can tell, getting my hands on a good wideband O2, would be a good investment. I have been searching around and I have a couple of questions, for all, is you own one or have used one, but just just for tuning and then plugged the bung....

Do you always have a gauge hooked up, or just when you tune it, ie the Innovate LM-1? disconnect and plug the O2 bung when done. Or did you run the full kit LC-1 and XP16 (I think that's right) their hard wire kit and gauge.

Or could I run something like the Autometer gauge with sweep for A/F ratio and their wideband O2 sensor? I know this will not tell me the number like the Innovate kit, but I want to get some ideas.

From what I can tell the Innovate setup looks to be complete for $400, or portable for $350 (but this setup I can't always be monitoring the A/F of my setup. Thoughts or suggestions?