Is the E-A7 backward compatible? Will it play styles from the G-70 and other Roland arrangers? Other factors to consider is support, since Roland seems to have abandon the arranger keyboard, and third party files availability.
The dual screen looks like it may be useful, and the demos on YouTube sound great.
Good luck in your decision, didn't Diki have one? Speaking of...???
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Larry "Hawk"
♫ 🎹🎹 ♫ SX-900