Your yamaha sounds good. That's surprising because I can't understand why the Japanese would attempt to make pianos when their lumber (especially pine) is very limited.
lol... you obviously have never been to the part of Japan I live in. Nothing but pine trees everywhere.
I have been really impressed with a lot of Yamaha pianos -- my teacher's piano is a Yamaha baby grand and it sounds beautiful. Kawai, however, I haven't really played one that I care for yet. Personally, I think most of them sound and play like a piece of junk. If you go Japanese, get a Yamaha.
These recordings are indeed nice, pianolady
. I am not really familiar with any of these pieces, so I really can't offer any advice. What I can say is that you're a music-playing machine. Sometimes it takes me forever to learn new pieces, and I'm envious at your ability to play new pieces so readily.
Good job. I can envision you going far with your playing. By the way, do you currently take, or have you taken in the past, lessons? (I take lessons now, but without a piano of my own, I struggle with my crappy "keyboard technique" and haven't been making much progress lately.)