Anyone try one of these A/F gauges

[smokindave]

My old eyes just don't seem to be able to see my digital A/F gauge.
I'm thinking I might have better luck seeing this analog one.
I was at a speed shop yesterday and saw this gauge.
Has anyone tried one?
Thanks

FAST Wideband Analog Air/Fuel Gauge



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FAST's Wideband Analog Air/Fuel Gauge combines an economical and accurate 2-1/16" gauge, Bosch wideband oxygen sensor, and stand-alone sensor control unit that mounts easily in the interior of any vehicle. Backlit for clear viewing at night and wired so it's powered up whenever the engine is running, this gauge is ideal for serious power tuning and monitoring the overall fuel tune of the engine for both daily driving or passes at the track. Gauge, module, harness, sensor, and bung included.

 

[2strokeboost]

I found that the needle bounces around and you can't see where it's at, I went back to digital but I'm using the aem one now that shows the boost as well as afr