Touch screens have some inherent problems, which is why some electronics manufacturers have recently went back to buttons, menus and sub-menus. Some of this is due to the physical mechanics behind touch screen technology, which has not changed significantly over the past decade.
Similar to buttons, touch screen connections have a certain number of times that the screen button can be accessed. And, like all switches, that number depends upon how hard that area of the screen is pushed.
The biggest problem is replacement. With buttons, in most instances a single button can be replaced at a relatively low cost. Replacement of a touch screen is very costly.
I'll stick with Yamaha's buttons--they've never let me down.
Good Luck,
Gary
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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.)