I am unsure what would work best for the Hx2-12. I can help you out with the black spiders with sewn leads and two copper flat wounds.
I do not have non-solder coil crimp connectors. The best way to go about that is by having precision do that, they have a huge machine that does it, but it is not a cheap process. I do have some flat tinsel lead that I would consider for high power applications. To be honest though most "huge" tinsel leads are pretty useless. You have to remember the size of winding on the coil, or better yet where the tinsel lead connects to the coil. The current will be limited by the smallest point in its path. It does give a nice wow factor though when people have 4-8 leads per coil though lol.