That brings up an interesting question as to best sounding vs sound including other factors. My best sounding keyboard is my Audya 76. AJ explained that the reason is that there was not the compression found in later Ketron models. That being said, I, more often, take the Pa4X or the SK1/SD40 for the reasons of more functions and less weight. I always want the best sound, but at the expense of other considerations? Do the listeners know or care? I have to admit I feel better knowing that I have presented the best I can regardless of the difficulty of workarounds and set up. Sometimes I think I am just making things too difficult. On the other hand, unlike many of you, I am only playing two or three times a week.