OK, let's flip the coin over. How many Roland, Korg, Audya, etc.. buyers that are currently playing with 76 keys would buy the same brands if only 61 key models were offered? Yeah--right!
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)