I used to have a Kinetico. Had dual resin tanks so when it was regenerating you didn't get bad or salty water.
It was mechanical so no electricity to contend with.
When I moved I got whatever Lowes had at the time. I get stuck with regen cycles when we are using the water and it is a nuisance.
I wish I had gotten another Kinetico, might still if I ever get back to doing stuff on my house.
Not a DIY because you have to be a dealer to buy them. All the plumbing up front can be done by you tho.
Put a whole house filter in front of it and put a shut off directly in front of and behind the filter. That made my life a lot easier at the other house.
On a well at both places if that matters. I used charcoal filters back then to keep the sulfur smell at bay. Even when I had to dig a new well.
--103.103.xx.xx