I have all of those molds and have used all the spoons. I like spoons anyway, but have never fished for lake trout, or Steelhead, or any salmon species. Have used them primarily for Striped Bass and Bluefish.
IMO, heavy metal spoons, when vertically jigging are just a hunk of weight and the flash, and the profile, and jigging action is the attraction, so they all work about the same.
I dress the hooks that I put on them, and feel that makes most of the difference.
Casting them may have some differences in how they will act in the water, but frankly I use both the lead spoons and stamped metal spoons and there's differences. You can fish a stamped metal spoon a lot slower than a lead spoon when casting them.
As far as pouring them, I have compared bought heavy metal spoons with spoons I've made from Do It Molds and have not seen significant differences in the spoons, particularly not for the price tag on some spoons. Tin versus lead is a different matter, big cost difference and weight/density, but that's up to you. I have several old "Tin's" but now don't use them much, and they had their time and place when they were a better option than lead, just like any lure type.
I don't know what else to say, except that heavy lead spoons from these molds have been good spoons for me, but I don't use them a lot now, and not in real heavy weights now anyway.
I don't do any foiling or anything like that, just powder coat paint, sometimes add the flashy stickers, and dress the hooks. I used to paint them with vinyl paint and only in a few colors.
I used to live in MD and fished the Chesapeake Bay and sometimes the jigging spoons worked well there in deeper water situations. However, many folks also made what they called a "Trout Bomb", which was nothing but a flattened inline sinker, that had been painted and usually had a dressed hook. They're used the same as a jigging spoon, and folks caught plenty of fish on them.
I often didn't bother flattening the sinkers, and I've even added spinners to them, which essentially made them into heavy duty inline spinners, but vertically jigging them, the spinners added a different action, and flash and appearance. Casting them caught fish too, like an oversized Roostertail spinner.
IMO, there's nothing special about any of these heavy jigging spoons, and making them from the Do It molds, is an economical way to have them, if you use them often.
Heck, I have one old, modified mold that someone had made from an inline sinker mold into a "diamond" jig style spoon, and it's rough looking, but catches fish if you get it in front of them. I think it's about 2.5 ounces, so heavier than I would use now.
