Thanks for responding to my questions. I'll check out some of the available styles to see if I can hopefully find decent emulations of pianos and electric pianos. I currently have a Casio WK-7500 keyboard that has pretty good piano sounds, but the strings, brass and synth aren't great.
The KN7000 was strongly recommended to me, but the few that I found for sale were well outside my price range at $ 1,400-1,900. When this one came along for $ 500 in excellent condition, I grabbed it. If, in fact, it turns out that it's not a good fit for my needs, I'll keep it at home and try to find a more modern, used keyboard.
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madmax