I tried your link.... didn't work, based on your comment above, I assume you purchased all three brands of the switches, took them apart and found the Carolina's switch to be better made as well as their customer service.
While I did purchase the Electric Life switches, and then I took them apart and found a pair of very high quality 25-30 amp micro switches encased in Delrin? (not sure how to spell it) with a large a solid pivot pin and SS mounting screws. They install very easily and had instruction on various ways to mount them if you had large holes etc….. Very happy with mine, only issue was getting them and even then the dude was very polite.