I have both the SAT 11 and the RCT. For tuning pipe, electronic and reed organs, I prefer the SAT. For pianos, I like all the information RCT takes from a piano. However, I still prefer the lights of the SAT over the spinner of the RCT. For me, it is much easier to reed the lights of the SAT. After using the RCT for two years now, I still don't like the spinner. It is just not as stable especially in the low bass and high treble. Jim Turner
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