Rubens What is most important to me is that the sound emulates my acoustic piano well.
Do you want it to sound like your acoustic piano in the finished recording, or while you are playing?
I do not have any experience with acoustic piano, so please feel free to question what I am about to say. When I read online discussions on modeled (e.g. pianoteq) vs sampled (e.g. VSL, etc) sound engines, and I read a lot of them, the word of “playability” comes up a lot. Pianoteq seems to win on the playability front for most people. Most sampled libraries, on the other hand, are regarded to have more “acoustic-like” sound.
I always wondered what “playability” means exactly. I think it means how the digital piano sound engine responds to the player in real time. Modeled engine excel in this regard because response in dynamics, timber, and pedal/sympathetic resonance are infinite and with little to no delay. Sampled library, on the other hand, cannot have that expanse of variation due to limitation in file size and processing power. On the other hand, in term of the richness of sound signature, modeled sound engine is always modeling a subset of what’s happening on the strings and in the soundboard, thus often not as good as recorded samples.
So it comes back to my original question. Are you using it for practice, or for making recordings?