Methownet BB

We have a salt-based water softener that needs to be replaced. Would love to avoid the hassle of a salt-based unit, but are unfamiliar with the pros/cons of a salt-free (full filtration) system. Wondering if anyone has personal experience with a salt-free full filtration system? Kind Water Systems has a product that looks interesting! https://kindwater.com/product/whole-house-salt-free-water-softener/

Thanks!