ive listened to the sd1 demos last year... Its sounds very good..even a bit above the awesome korg pa1x.. But i preferred the Tyros 1 sounds and styles to the SD1.. And i feel the Tyros 2 sounds much better than Tyros... So for me nothing (yet) is even in the same league as tyros2. I love the thin sounds.. the styles kick butt.. The guitars,sax,strings,brass, flutes,trumpets,accordion are just awesome and unmatched by any other keyboard i think... And the styles are just so fantastic ...all the styles are so good and usable