I have the Soundsmith SG-200 and I like it. While I don't think I am qualified to review it, in general I would say that my experience agrees with Michael Fremers -- which I would paraphrase as follows.
Less "romantic" than many moving magnet/moving coil cartridges but without their frequency response anomalies (e.g., rising top end). Very fast, clean sound; kind of like the differences between McIntosh tube amps (fast, clean) and other tube amps that are very good but which are "warmer" and not as neutral. The strain gauge has many of the advantages of the best digital sources but without the almost inevitable digital artifacts.
I really like the strain gauge and will keep it in my system for a long time to come.
Regards, James
Less "romantic" than many moving magnet/moving coil cartridges but without their frequency response anomalies (e.g., rising top end). Very fast, clean sound; kind of like the differences between McIntosh tube amps (fast, clean) and other tube amps that are very good but which are "warmer" and not as neutral. The strain gauge has many of the advantages of the best digital sources but without the almost inevitable digital artifacts.
I really like the strain gauge and will keep it in my system for a long time to come.
Regards, James