@roberttcan,
Actually, most, if not all of your mentions were brought up in older threads as to why it could explain the efficacy of aftermarket fuses, but they were all shot down as worthless, meaningless, or just silly.
A lot of these aftermarket fuses are based on high rupturing fuses which are made for medical, military, and other high end uses that have been around for many a year.
All it took was some enterprising chaps to apply it to audiophile needs and jack up the price. That's not to say they don't perform better. But they do impact the resultant sound.
Padis fuses go to great lengths to ensure that the end caps are positioned to ensure an even roll on a table, ensuring better and fuller contact with the fuse holder. They even go a step further by omitting any engraving on the sides of the end caps and print the values on the fuse body, ensuring an even fuller and more consistent contact surface. They use better and purer metals as well and cost about $25 apiece, which goes to show that one needs not spend a fortune.
I'll admit that these fuses are overpriced, but what isn't? It's all about what one's willing to pay. I've tried 4-5 different brands and they all sound different and I don't need for anyone to quiz and test me as I've made it this far in life without resorting to fanatical lengths to make sure I'm hearing what I'me hearing. 👍
All the best,
Nonoise