Butech again for me this year, closely followed by Mapei and I've also used a fair old amount of Creative Impressions GBTA. Interestingly I've only used about 10 bags of BAL gear this year and that's all I ever used to use.
I only ever use Mapei's gear from Mapeproof 1k turbo surface membrane, through latexplan trade or renovation screed, eco prim then keraquick addy's and grout for price to quality ratio i do find their products to be one of the best. Used to use alot of BAL but they are rather expensive and not much if any better in my opinion.