I’ve been pretty much of the same mind Fred. I love the responsiveness of Pianoteq but the sound has always left me a little “meh” for want of a better word. The midrange mostly. It just doesn’t quite have that “yep, that’s a real piano” sound.
Perhaps V6 is closer. Worth checking out.
Since getting Keyscape a few weeks ago, I have a new favourite grand piano. The Yammy they’ve captured is the best feel of any sample library I’ve used and the sound ticks all my boxes.