Greetings, on the behalf of the sia community I'd like to welcome A3 miners to our project.
We recommend staying away from antpool or f2pool, and going with some existing community-run pools. Sia is about storage, and we've already had issues with F2Pool in mining empty blocks, so if you want the coins you mined to continue to be worth something, please check out the complete list here:
https://siastats.info/pools_list.htmlWe really want to avoid bitcoin's governance problems, and the community will take action if Sia's function (storage) is threatened by bad pools, so please pick small pools and help us stay decentralized!