The only virtual Piano that emulates the pedals like a real Piano is the new PianoTeq 3.0.
I like it for fast access w/ a notebook and an ES88 for quick money making.
I have QLP and only recently have they made it worthwhile with their new upgrade. Prior to that I was quite angry with it's sloppy code.
I used Black Grand and 7 Seas w/ Gigastudio, and the Bosendorfer 290 also, but IMHO these rompler guys obviously never played a solo gig where that third hand for Low end sustains via the sostenuto pedal was used.
I am sure they are marvellous editors of MIDI Files but in the real world the sostenuto pedal is a performers dream come true.
Scarbee is a great developer and I have been told that the Alicia Keyes stuff he has done will incorporate a real sostenuto pedal......what a concept.
Garritans Steinway was suppose to have the sostenuto pedal but after it's release I noticed they forgot they advertised that fact.
But I suppose if you don't mind paying to be a BETA tester and sequence your recordings, it would be a great choice as it's sound is really good.
I guess since Steinway recieves a percentage of the sales because it's " authorized ", they didn't mind the lack of advertised features, besides with a real Steinway C, who would need the fake one bathed in static reverb, with bugs and missing pedals....