My husband is still thrilled with the Antminer S19 from Unigrade that I ordered for him as a gift lol As far as I know with this model he can make a minimum of $4.67 daily, and it has a 1-year warranty and this was the main criteria to me because I wasn't sure if that was the right miner that my husband wanted to buy. He's been using it for a few weeks now and seems like the results are amazing as I see from his reactions, lol It's great to finally have a miner that can satisfy his curiosity about mining and that works without any issues. I'm thinking now what if I need to purchase a mining rig as a next gift for him?