Another late reply here...
I bought my digital piano about half a year ago.
CN3 was one of the models I tried.
I think the strength of that model is the well balanced piano touch. It was very easy to control the dynamics with the action of that piano. I could play very even and very well controlled. Control was much better than on the yamaha's where my playing always became uneven, no matter how much I tried, especially the gentle staccato notes.
However, 2 disadvantages prevented me from buying it:
- Even though the action allowed for well controlled playing, the action also had a bad point: It was way too light. It was much lighter than the Yamaha and Roland digitals, and also much lighter than the Kawai CA series.
- The piano sound is of significantly lower quality than the piano sound in the CA series. It misses depth, and it sounds quite mechanical.
So, basically, the difference between Kawai's CN series and CA series was so huge, that the CN series was no option for me anymore. I concentrated on the CA series, and compared it to Yamaha (the difference between the cheapest and most expensive clavinova model is much smaller the difference between Kawai's CN and CA).
The sound quality of the Kawai CA7 was about comparable to the clavinova's except maybe the lowest 2 octaves of the right hand (which is unfortunately the most important part...). The action of the CA7 was MUCH better than the Yamahas and Rolands. I never managed to play with proper evenness on any of the Yamaha or Roland keyboards. So, I decided to buy the Kawai CA7. And I don't regret it at all until now.