Tbg, for me the answer depends on WHY one needs a gauge that is more accurate than the Shure or others. I'm a believer that the gauge only gets you into the ballpark because the optimal VTF setting must be set by ear and must be determined through iterative adjustment and listening as VTA is dialed in because the two settings interact. I've always followed Lloyd Walker's recommended procedure for fine tuning turntable setup: www.walkeraudio.com/fine_tuning_your_turntable.htm
So for me, greater accuracy than the Shure provides is irrelevant except in one situation: If one has multiple arm wands and needs to easily move from one to another, being able to re-establish quickly, easily and with great accuracy a predetermined optimum tracking force makes sense, and there are gauges out there that are more repeatable with precision than the Shuure. But in my opinion, that pre-determined optimum tracking force will have been determined in an earlier "dialing in by ear" process. In this case, the important factor is the gauge's repeatability of measurement (i.e., the ability to get precisely the same result over multiple measurements), not its absolute accuracy of measurement.
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So for me, greater accuracy than the Shure provides is irrelevant except in one situation: If one has multiple arm wands and needs to easily move from one to another, being able to re-establish quickly, easily and with great accuracy a predetermined optimum tracking force makes sense, and there are gauges out there that are more repeatable with precision than the Shuure. But in my opinion, that pre-determined optimum tracking force will have been determined in an earlier "dialing in by ear" process. In this case, the important factor is the gauge's repeatability of measurement (i.e., the ability to get precisely the same result over multiple measurements), not its absolute accuracy of measurement.
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