just my 2 ¢ worth:
While I love my T4 and would like to have a better harmonizer, I have learned to live with it by tweaking my settings (thanks to the helpful advice on this forum).
However, I just read the review in Keyboard about the Yamaha P-105, a relatively inexpensive keyboard. Besides the rave reviews about the piano sounds, I was most impressed with what she said about a feature called “Intelligent Acoustic” control, a realtime automatic EQ that keeps your sound balanced. If this feature were to be added to the new arranger (T5?) I would definitely consider replacing my Tyros 4,(then I’d have 3 arrangers!).

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