Next to Ivory this is the most expressive and beautiful grand piano. With Yamaha P60 as a controller it is a very convincing piano experience. Makes PMI Bosendorfer sound like a Casio.
This is one of very few instruments that I can literally found myself lost for hours just improvising and enjoying the details of the sound. I compose nearly all of my music with it, even if piano doesn't necessarily find itself in the final mix.
I used to have similar problems with slow rendering and loading described by others here when I used it with Cubase, but now that I have switched to Tracktion as my sequencer, it renders and loads extremely fast. Ironic to think that a Steinberg instrument works better in non-Steinberg sequencers...
There are times when I find it sounds just a tad bit muddy in a mix, but then I do play the left hand a bit heavy, and usually have bass guitar in my tracks as well. In any case I just roll off a bit of the low end and it sits in the mix very well.
There is not much of a choice of sounds here, but the sound it has is truly remarkable.