By the way, Roland Go Piano (61) has some organs, choirs, strings and a pad. I dare to speculate they would be way better than on Casio. And Roland Go Keys has even larger variety of tones. Both are close to $300. There’s also Roland XPS-10 which is a bit more expensive with, perhaps, bigger collection of tones. I guess, for the same money any non-arranger would provide a better quality of sounds than an arranger. But those are my speculations; I’m not that personally familiar with these keyboards, although I tried some of them at stores and watched some demos.