Which K-Sounds piano, mrdave?
If it is Vol.2, maybe it needs more work? Here are a few demos of the Kurzweil version of Vol. 2.
http://www.ksounds.com/Demo/KSV2_Kurz/KSV2_Piano_1_studio.mp3 http://www.ksounds.com/Demo/KSV2_Kurz/KSV2_Piano_2_bright.mp3 http://www.ksounds.com/Demo/KSV2_Kurz/KSV2_Piano_1_full.mp3 This is one of the few sampler pianos that fit in a sub-128MB sampler that I think seriously gives my G70 a run for it's money. And Kawai has it's own 'flava'... sort of a hybrid between Steinway and Yamaha.
James.... what about the P Creek file burns you? On the better sampled pianos, it sounds amazing... On lesser ones, perhaps not so much.

I have a feeling that quite a few piano sample makers cross over the bright samples too low down in the velocity range, in an effort to get that mix cutting sound. Trouble with that is, a real piano cuts in the mix because of careful EQ and compression, but the raw piano sound is still full and warm, and only gets that bright when you really spank it.
The P Creek file really shows this problem up, as it truly DOES use the full dynamic range of MIDI.
But please tell me what YOU think about this. I am fascinated to talk to someone that 'walks the walk' and tries what is surely the most challenging sampling project out there...