Royalty Shower Wave Brush #726- 7... https://www.amazon.com/dp/B07NS499PZ?ref=ppx_pop_mob_ap_share

Veeta Superior Wave Brush (Medium) https://www.amazon.com/dp/B09HLH15HB?ref=ppx_pop_mob_ap_share

In my opinion these two brushes are really good the Royalty is a bit big and harder but can be useful for more coverage the Veeta is a bit smaller and a bit harder to grip but has a great finish and is good for hard angles and vertical brushing both have nylon bristles I believe