Digital piano
They have improved a lot during the last few years. But there are important drawbacks: the keyboard is light and does not favour the development of a good technique, and the sound quality is poorer.
An electronic instrument may represent an interesting alternative, but on a temporary basis, unless you settle for a top-of-the-range model, which may cost... more than an acoustic piano. Also, depreciation on electronic instruments is much higher. Electronic instruments are of course essential for those who are interested in musical research.
