| Someone did a test of various digital and old pencil style gauges on Bimmerfest a while back, the results are posted there. The pencil and "Analog" gauges were on average not as accurate as all the digitals reviewed, the guy really did a great test, I will try the search feature and see if I can post it, definately worth reading.
I was an aircraft tech early in my career and found that digital was far more accurate, the old gauge style I had was only off 3%, but 3% of 235 PSI starts to add up. We had our digitals calibrated every year, I would compare my own cheap digital with the calibrated unit and my cheap unit was right on or below 1% off.
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On the other Hand, your dealing with an entirely different set of fingers
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