The T4 line of synthetic brushes by DScosmetic is very nice. https://ischiapp.blogspot.com/2023/06/dscosmetic-synthetic-brush-t4-g7.html There're very few info about both synth knots, T4 and G7. Can you share your experience?
Looks like A2S is different to T4 ... DScosmetic Synthetic are nice. https://ischiapp.blogspot.com/2023/06/dscosmetic-synthetic-brush-a2s.html
I'm by no means an expert , I love mine and wouldn't hesitate to buy another. To me it feels damn near like badger has some scrub and scritch without being aggressive , yet soft and supple, it retains water very well. Out of all my brushes it is my absolute favorite. to say I got it for 16 dollars is nothing short of a steal to me!