My fingers are often sliding off of the black keys of my Yamaha arranger - something that can be ameliorated with lots of practice.

But my new Casio digital piano has me thinking. The plastic keys on this keyboard have a surface to make it feel like wooden keys. Think of two kinds of paper: Glossy brochure paper - that's the feel of a typical keyboard's keys, and regular copy paper - that's the feel of the Casio's "wooden keys." The regular paper is less slippery.

I would bet that the Casio type of keys aren't any more expensive.

Would you want your keys to be less slippery? Do you think that would improve your playing? My fingers still slip off the Casio's black keys, but I notice a little improvement. The only downside I can think of is that glissandos can be a little harder on the fingers.

Beyond smoothness, with nanotechnology they can create surfaces that are anti-bacterial and anti-fungal. Would you put any value on a germ free surface?