I still like Ivory quite a bit, and I disagree that it's a waste of time. However, I do wish it was possible to edit the individual notes/samples like you can with Gigastudio and Kontakt sampled pianos. Certainly, none of these libraries are perfect, and the ability to change what we don't like is important, I feel.
I don't care for Akoustik Piano or the Garritan Steinway nearly as much as Ivory, and the Bluthner Digital demos don't do it for me. The Sampletekk Black Grand is quite good for some types of music. The pianos that I'd really enjoy trying are the EWQL's, but the computer horsepower necessary and the cost of the library are holding me back.
It's funny that one good quality acoustic piano can cover ALL the bases and do it well, while we need to think of these libraries as different brushes for our palate. Because Ivory, and the Galaxy and EWQL libraries contain several instruments each, they're pretty appealing, like a Swiss Army knife .