I don't know which brand deserves my loyalty. I had a Roland E50 and regretted selling it. Yamaha YPG 525, big disappointment and gave it away. PSR S950, because I got a very good deal and needed a KB quickly to continue gigs, sold it for a good price and then acquired a PSR S975, another good deal.In retrospect I should have researched more and not make any hasty decisions. From what I know now, I should have tried a Korg PA1000. Will I ever be happy? Like others said before there a advantages and disadvantages, there is no perfect Arranger Keyboard. So,I'll make the most of what I have now and be satisfied with it.