Diki,
I do not doubt your intentions but it remains remarkable to me that you are about the main contributor here but also the one who has to pinpoint many faults and shortcomings of the new keyboard generation whilst playing an "old" keyboard yourself and not having played extensively , at least not owing one, yourself.
It is generally known that I have favoured Korg for quite some time now, but recently I added the PSR750 to my PA800 and as mentioned before, it is a pleasure. Both keyboards supplement one another to perfection and apart from taste etc.etc. I would maintain that Tyros4,PSR 950, PSR750, Korg PA3X, PA800 and PA600 are simply great keyboards and though not perfect will offer great pleasure to most musicians. ( Ketron included). I know you will not spare Roland if necessary, but I think it would be wiser to vent your criticism of e.g. the PSR-950 if you actually played and owed one yourself. No offence....
regards,
John