IMHO there is no such thing as the perfect virtual piano and never will be.
It`s a bit like a studio monitor: There`s no perfectly flat one, it`s all about what you prefer.

When we started sampling the Beurmann collection, we asked ourselves if we should go for a sampling concept or if we should use a modeling concept. When I heard the instruments of Mr. Beurmann, I decided to go for the sampling concept. Listening to these old, unique instruments (some are almost 500 years old), I noticed that they incorporated a certain magic that modern builders just couldn`t achieve (think of a Stradivari violin, for example).

So if professional builders can`t really capture that magic and put the finger on where it comes from, how is a software modeler supposed to get this right by creating a physical model of the instrument?
That was my main point why I decided not to go that route. Of course, you might be missing the interaction of notes, but for the playing feel, if the samples are done right and if they capture the vibe of the instrument, it is not that bad.

Think of it that way - there are many piano libraries out there that use noise reduction on the single samples to avoid noise layering when playing chords. Any noise reduction tames harmonics and makes a note sound somewhat dead, and this is especially the case if they layer in a chord.

Now if you don`t do anything like that to a well recorded sample, it will sound pretty pure and layer well within the samples, not making you feel like you play a dead dog.

Be aware of the limitations and simply choose what suits you best

The good thing is that the stuff is not as expensive as the real ones, so you can get more than one.