AFR Gauges

Is anyone running A.F.R. Gauges and what brand is working for you?????? Once upon a time I run a Fi-tek on my Duster only to have it fail after a very short time of running it.......(Disaster)........ The Fi-tek only monitored one bank in the engine as reference to the AFR for total engine Air Fuel Ratio control of the fuel injection system ............
To give everyone what my 1/4 of a brain cell is flopping around inside my head is my Engine has the Indy aluminum heads with a matching single plane intake manifold.
I went back to carburation after the Fi-Tek disaster and after plug reading several times have been totally convinced a man does need to be reading both banks for accuracy as the Fi-Tek was monitoring the overall AFR ...Yes I get it but programmed to keep that engine at a 14:1 or the close to that number. Under this condition my plug reading was showing all the outer cylinders were leaner than the inside cylinders .....................
The plugs in the car with the Fi-Tek being run on it in cylinders #1 & #7 and #2 & #8 had a almost brand-new look to them in comparison to the #4 & #6 or #3 & #5 cylinders..........

FAST FORWARD
Now that a new Holley 750 carb is back on the car ...ALL the plugs look much better (Light chocolate color) telling me the AFR is much better with All cylinders in a much better visual inspection and throttle response is much better.
This still does not tell me numbers ........... but does tell me my engine is running more in the 13:1 rather than the 14:1 or leaner the way the i-Tek was controlling it.
I don't want to buy any junk, crap nor R & D everything Summit offers ........... Someday I will tell everyone my Fi-Tek disaster story a HUGE WASTE OF $1200.00 not
including the frustration level that was off the charts. ............Thanks everyone Texas Red.......