PREMIUM COCO on Facebook is the one a lot of the pros use. Thai coco is very salty make sure to buffer and wash it again yourself although this specific brand is processed well. impossible to find Sri Lanka or Indian coco, AFAIK coco imports are banned here.
I have found good coco in local markets as well but have to hunt and wash hard. (Kham thiang, chiang mai)
Facebook - https://www.facebook.com/PremiumCOCOCOIR