Diki..., you're used to the G-70 man. The G-70's keys are like night and day compared to the NP-30. To someone who is used to the typical action of a PSR..., they may notice the difference. If you're used to the smooth action of the 70.., the NP will feel like a Casio to you. There is resistance to the keys as well. You can feel the graded resistance (it's not the best, but better than nothing I guess)

The piano sounds aren't the best, but the onboard speakers are just shit period! The unit sounds much better with a decent set of monitors.