Having received my MS M1 Max just a few weeks ago I was wondering if I should get AC+. In the end, I ordered it "one year at a time". With it being a 1st-year product, the noise complaints, and the fact that you void the warranty if you open it up to blow it free of dust, I opted for security over money...
I have AC+ on my MP19 and my MBP21 as well.
I have AC+ on my MP19 and my MBP21 as well.