If anyone is interested in doing it, the piano playing MIDI file that Purgatory Creek use file is available on their website. Play it through your arranger's best piano, on default settings and reverb, and upload the audio file here (and to them - I believe they ask for a 192kbps MP3 format, to keep things even)...

It has a wide dynamic, with big strong passages, and small, intimate voicings. A good file for testing all aspects of the sound.