I have no use for touch screens on an arranger, and I am glad Yamaha has chosen not to use them on their products.

Biggest issue is no tactile feedback...users cannot feel the buttons they depress and hence must look at the display while entering information.

Roland's OS is no worse or no better than other OS systems...it's just different.

It's all what you get used to...I found the E60/G70 very easy to navigate...except for the touch screen...and nearly as easy as the Yamaha system, which is what I prefer.

Ian