I've puttered around with comparing different pianos in the past, but here is the start of a (hopefully) more extensive comparison.

Free Kontakt 5 Pianos
http://soundcloud.com/bigcat1969/sets/dpe-free-pianos

Native Instruments Pianos
http://soundcloud.com/bigcat1969/sets/dpe

Addictive Keys
http://soundcloud.com/bigcat1969/sets/dpe-addictive-keys

Some Sampletank 3 Pianos
http://soundcloud.com/bigcat1969/sets/some-sampletank-3-pianos

 

I would love it if Neil Young would sample his old upright. He could call it Young's Old. Thanks for the comparison and can't wait to hear more.

 

Since I'm no musician I just found an orphan midi with some variation in tempo and velocity to use. I can understand that its not to everyone's taste. If any of you real musicians wants to create a nice original piano midi to use that would be awesome!
Also it would be great to see folks with the better digital pianos toss up their own demos. Would love to hear Imperfect Samples, PianoTeq and the like.
Thanks for taking a listen.