Look, I’m not a paid shill, but some names keep popping up for a reason: Fleck (the Toyota of softeners—boring, reliable), Aquasana (salt-free, eco-friendly, cute design), and Pentair (industrial-strength, for water fanatics). Read reviews like you’re a detective.
Avoid the no-name Amazon specials that look like a prop from a sci-fi movie. They break, and customer support speaks in riddles. Stick with the big dogs.