Rubens you are not alone (and I think we have discussed our ES920s over on PW 🙂) ! My main piano is a baby grand and I have an ES920 for quiet practice. I find the ES920 enjoyable to play and skills I learn on the ES920 transfer nicely to my acoustic piano (and vice versa).
In addition I have fun with the bluetooth audio feature, streaming music through the piano and playing along with it.
The action of the ES920 is realistic enough for me to practice advanced (for me) technique like rapidly repeating notes, and the SK-EX samples are lovely. I also recommend!