Pro,
as I said the Tyros was mounted on a tier directly below a 9000 pro, so I took a chance to play that too. I can't explain well the difference, but the piano on the Tyros had more presence, yet at the same time was more mellow. To make an example, it was like comparing a Bosendorfer with a Yamaha. I don't know if they used the same multi-sample, but in this case this means that the Tyros has better converters or better filters or better whatever - fact is I liked the Tyros piano more.