Hi John, thanks for sharing this, I really enjoyed it like I do with all your recordings and compositions.
I love this keyboard. I really do. It's exactly what I though it would be, it's everything else that both Yamaha and Korg lack, that raw live natural sounding feel to it. Don't get me wrong, I also love both my SX900/T4 & Pa1000 equally as much for other reasons, but the Ketron just fills in the rest of the gaps.
If there is just a slight small teeny weeny issue or criticism I have of the SD7, it's that I think it drops notes sometimes because when I change chords it feels that some of the sounds are briefly muted then they re-appear again, breaking the flow a little. Maybe it's because I am not used to how heavy the keys are in comparison as they are heavier than most, they have a similar feel to the Pa1x that I can remember. So maybe it's me because nobody else has mentioned it.
I have thought about the SD60 a lot, but I am not sure it's worth paying that much for it, because I think it is the most expensive keyboard out there? But that doesn't mean it would also be the best. There's hardly any demos or videos or even much info on this keyboard so I certainly wouldn't take the plunge with limited info available.