Solo piano for sure, an instrument I'm very familar with, live and recorded. But as you said, its not the only thing I listen to when auditioning stuff.
What Instrument would you listen to?
Ok, this is not the real world, but if you HAD to audition a rig (for purchase) listening to only one acoustic instrument; what instrument would be your lynchpin?
Piano, for me.
Piano, for me.