I think it's remarkable that a keyboard in this price range has done so well. It is extinct in music stores, so that in itself proves a lot of sales are by mere reputation. IMO, a 'Tyros 76' with plug-ins and hard drive would start the Pro's demise. Until that time, I will stick with the Pro, for there are too many 61's on the market.
Zuki
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Live: Korg PA4X/Bose L1 Pro 8/Senn 935

Studio: Korg PA4X/Kawai MP7SE/Tascam DP24SD/Sony C80/AGK 214/ATEM Mini Pro switcher/