From the price category up to 20tr - I liked this synthesizer both in terms of functionality and quality. Bought for kids to play music. As a result, he caught fire himself, and having blown the dust off the diploma of graduation from the music school, he began to practice. By the way, Casio, upon purchase, gives a free subscription to an online course on playing the keys. For the most part, you have to play late at night, so you can’t go anywhere without headphones. And here there is a nuance - the plugs do not cope with the sound at all, some kind of squeaking is only, but the overhead ones are super, The sound is more "thick" in them. The synthesizer itself is light, it has a comfortable handle - it's not scary to carry it around. The keyboard for those who played fano is a bit narrow, but you get used to it in a couple of days, and the scales will help))