Yeah, I have a Kousa now. It's done wonderfully. Blooms a bit later then other Dogwoods I see around. Nice white blooms with some tinges of pink in there. Fruit is red as well.
Looks like red-twig is the same species. I had one when I lived in Middleboro and I just loved the bright red in WInter.
https://www.mortonarb.org/trees-plants/tree-plant-descriptions/red-osier-dogwood