I think some confusion exists on exactly which transmitter we're talking about. This does make it difficult to answer.
Our leading choices are RT+, RT, GPS, TURBO and finally the mother lode GPS/TURBO. Some of the answers are swayed to Turbo only and some with a little bit of GPS/TURBO. All are signicantly different. Which one does your question refer to? Regardless, thank you Marshall for all you have done!!