Well at least I said 'nearly'

identical. I thought the Tyros & PSR3000 have basically the same OS, with the PSR3000 just having the added removeable memory Card instead of HD, & the Tyros having MORE sounds & additional features (3 foot pedals, larger screen color LCD, etc . I had only quoted what my local Yamaha dealer told me: that the the CVP300 series keyboards were based on the Tyros. Perhaps he was mistaken.
Scott