I bought a number of those Mowl Round One 3d-printed responsives as an experiment
and.. you’re right it is DEFINITELY getting better. I wouldn’t quite put it in the same category of mass produced plastic items, but it’s definitely decent now. After another 10 years it might be pretty close.
And the price is GREAT. $10.99 is even cheaper than the magicyoyo chinese mass produced responsives, the K2 Plus Crystal.. that’s like $12-$15 or more depending on colorway.