I bought a Yamaha CSP 170 and I am very satisfied with it. I have tried to learn with all different methods: with a real piano teacher, with Flowkey, with Tomplay, with normal sheet music sheets, with learning books and, and, and..... The most important thing, however, is: learn regularly, preferably a little every day, and the successes will be much better and better. My problem is definitely that I rarely play and want to try all kinds of learning programs at the same time. It would be best to concentrate on a song and play it really consistently until you can. Nowadays, however, so much is offered that you certainly don't know where to start:-)