sound quality and edit power wise(ability to customize everything)Korg is great(seems like they designed like a workstation with some arranger features thrown in).
on the other hand some of yam's sounds,hardware are unacceptable for their price but their arranger functions made up for it since Korg is lazy in that dept.

and 3 rd party support of yam(all korg,most roland hit Kbs styles are free for yam psr format),together with sub 1500$ yams(with USB to device and SM card input,(styles and SMF storage inside the KB is a nonissue these days),it's hard to compete with a 3k for it's price.I still think 3 K is a litte over priced(should be around 1199$)like 2 k and 2100.

I am sure If Korg has yam's arranger features it will outsell every thing.


PA50 (triton board) sound wise no comparism to psr 1500 which is sold for same price.
but pa50(2004)KB shold have some kind of storage than a 1995 FD(and they can charge 1200$ it will still sell).

for the original question ,you can wait and check tyros 2,then you can do either of these.

buy a pa1x + psr 3k ($5000)

or tyros 2+ pa 50($4000)

cheapest option will be a pa50+ psr 3k($2500)(still cheaper than tyros 1).


Since there is no ultimate KB that can do all,I would wait and check the T2 out for it's features(compare with above kbs),then make the decision.