Let me start my review by saying that the Casio PX150 is not one of the high end digital pianos. You’re not going to have all the bells and whistles of higher priced models. You’re not going to have the best speakers. And generally, you’re not going to have all the features that digital pianos come with these days. But, it has the same grand piano sound engine as any of the higher end Casio digital pianos. Which means, you’re going to benefit of the same quality, at a lower price.
As far as touch is concerned, the PX150 has a heavier touch than other digital and acoustic models, but in my opinion it’s better than having a far too light touch. It comes with 18 voices, which is far less than other digital pianos come with. It depends, though, on the needs you have.
You would want to buy this piano if you want to enhance your performance in playing classical piano, and not as much other connected genres. The PX150 is one of those digital pianos that have very strong fundamental aspects, but lack much of the flash of other models.
I recommend using this digital piano with headphones or external speakers. You will notice that the sound, at its core, is of a great quality. The built in speakers aren’t the most spectacular that I’ve experienced though. But, if you’re practicing a lot, you need to use headphones anyway, or you’ll drive your family crazy by repeating the same musical pieces over and over again.