The Black/solid red Simmentals are AMERICAN made Simmental - have the features we as breeders stress as important - calving ease, low birth weights ($$), no spots ($$), and yes color ($$) - along with the traditional benefits of the breed - heavy milk, good muscling & growth.
This has been using a combination of Swiss Simm, French Simm, Flecks & American breeds.
The true Flecks represent the German/Austria strain of the Simmentals. They are real meat/milk machines. They make super crosses with Angus and lighter muscled black Simms. Part of what made them so popular with Simmental breeders, is the Fleck strain DOES NOT carry the diluter gene, so you get a true RED or true BLACK.