Hi,
I tend to agree with most what Jamman says here about the Korg PA-50. After having owned a PA-80 for two years, having a very short fling with the PSR3000 I returned to Korg and as I wanted to economize (if not I would surely have got the PA1X) I settled for the PA-50. Which is as good a keyboard as Jamman says and quite incredible for the price tag. However I disagree with the remark about styles being more versatile on the PSR, basically because of all the things that you can do with the drum and percussion tracks. And let's not underestimate how important the drum track is in deciding on the versatality of the complete style. with the PA-50 you can AT THE TOUCH OF A BUTTON silence, alter, each and every drumpart within the drumpattern e.g. in a rock style you mute the BASS drum, you bring down the volume of the SNARE drum ,etc.etc. as well as being able to pan,and add reverb etc. individually to all these parts. Furthermore and even without having to go into this submenu there are SEVEN sub variations to each style variation of the Drum and percussion tracks. Oddly enough I have never heard people about this terrific phenomenon which to the best of my knowledge and in such an extensive form can only be done on the Solton/Ketron keyboards.
An important factor to weigh in.
Finally, though as everyone says you have to simply play the thing and make up your own minds, there's no comparing a PSR1500 to a Korg PA-50. To me personally not even to the PSR-3000 which admittedly is a very good machine. (be it twice as expensive as the Korg PA-50 which I would choose anyway...