My bipoles are older Energy RC-Rs… and they don’t really offer much in the range of in-walls.

So, for sourcing purposes I’m thinking I’m going to try to stay within the Masimo product stack (so, Definitive Tech, Polk, B&W). Definitive seems to be the closest match, and their in-wall bipole surround looks interesting, but I don’t see what I could use for Atmos angled in-ceiling. Polk does have an angled in-ceiling. B&W is likely prohibitively priced?