I can't understand that some find Kawaii that good. I played on a Kawaii Grand several times and had hard time to get used to the action - heavy, stiff, sluggish. Sound was not bad however. I have a Kawaii MP9500 digital piano for practising purposes (if the living room cannot be used for playing on my grand) - some like it because of it's action - me not. It has almost the same sluggish action as the Kawaii Grand had.
I do not care much about brand names, what counts to me more is
a) the sound for soft and heavy attack
b) the sustain of the tone
c) the brilliance of the tone
d) the eveness of the action
e) the responsivity of the action
f) the length of the piano as it determines the bass sounds the most
I would prefer by far a 100 year old no name long grand piano with new high quality action and new intonated hammers before a brand new "cheap quality" baby grand, if the price is the same. Because I expect better sound and easier accustoming to the action in this case.
I do not regret that I had restaured my 70 year old Steinway O two years ago, with new Renner action, new strings, intonation, soundboard restauration (acoustic restauration cost about 10.000 Euro). It sounds not like a new Steinway to me, it sounds even better.
In my theory, the sound wood can produce gets rounder and with longer sustain (for me: nicer) the older the wood is. Lock at vintage guitars and violins. They are in much more demand than new guitars. I am sure, the same works for piano - beside the mechanical things, what can be replaced. I have heard that the sound changes if the wood ages, because the resin in the wood gets first hard, next starts to crumble. Because of this, the wood can vibrate more intense.
Conclusion: Long and old piano, new action, if you like new strings too, and you have the best sound for a given price you can get.
Just my personal opinion...