for arranger users-
it's not strange to see more arranger gig users prefer Yamaha over korg-no midi file play back only or mp3 playback people(more or less karaoke people behind keyboards).

yes korg drums sound better,has better synth power,better built quality(not pa 50)and more pro look BUT

yammy got the right things in all in one pakage.
they are

better,natural (and more)fills(unrealistic and only 2 fills from korg)

pads which can play loops(yes major realtime musthave-you can sound as if you have 15 fingers-like korg's RPPR and roland's RPS function on their workstations)

arranger and mid file play back function unity-
choose a arranger drum style while you are playig a mid file and make your rock mid file play jazz drum style

of course better /flexible vocal input and harmonization(under 1499$)-so don't say PA 1x has better

more simu efx,eqs,more 3rd party support,bettr OS and the list goes on

and yes that's why they sell better too.

some may say psr 3k is not a pro keyboard but they change their minds when they see more and more pros using it.

but if you have 2500$
don't buy tyros or pa 1x(by adding 1000$)

buy pa50/60(1000$) and psr 3000(1500$).

done.