As they say - road to truth has many turns. You of course would have to listen a little more but it seems to me that you definitely like Soulution/Magico match much more overall than Pass/Magico match. With the right cord on the amp and ideally all Stage III cabling.
Not familiar with Soulution but read about them. I guess, Soulution and Magico are much close to each other in terms of 'school of thought' than Pass to either of them, so the outcome of your experiment should not be surprising, at least this part of it.
Before you make your final decision, I would suggest playing poor quality recordings and see how they sound thru Soulution/Magico with both KS and Stage III interconnects and speaker cables.
Not familiar with Soulution but read about them. I guess, Soulution and Magico are much close to each other in terms of 'school of thought' than Pass to either of them, so the outcome of your experiment should not be surprising, at least this part of it.
Before you make your final decision, I would suggest playing poor quality recordings and see how they sound thru Soulution/Magico with both KS and Stage III interconnects and speaker cables.