Rodrigo, the true difference between the two keyboards is evident when you use features such as third voice, S. art buttons, scat voices, ensamble feature and many others that are not on the PSR. If you just play the keyboard in a simple way, just start a style and play a melody without trying to get effects into the voice, it will sound more or less the same on both keyboards (Genos owners may protest). A good speaker system will help in making the S970 sounding better, the internal speakers are good, but they are not like the Tyros/Genos speakers. You can use Genos styles on your S970 that people here have converted. They sound very good, but can never sound exactly the same as on Genos.