I'm a 'suburban boy' by birth and had no previous experience with "water treatment" before we got a place "up north"
When we got our place "up north" the previous owners had a some sort of "softener" system. It was rented and therefore removed, before we got the joint, so I have no idea what type of system it was.
Anyway, all the drains are absolutely destroyed.
This bad, on an 18 year old house.
I blame the "softener salt" for the damage.
So when we "moved in" the water smelled like a nasty fart, and the toilet tanks looked like a "beach" because of all the sand in them.
I decided to install one of these systems from Water Express. (bleach bottle is for size reference)
After the install, we still got the "occasional" nasty fart smell. So on the first filter change, (about a year later) I decided to switch to 2 charcoal filters and the sediment filter.
So I went from the original [ SED, KDF, ACB] filter trio, to a [SED, GAC, ACB] trio. The second charcoal filter helped a lot.
Odor is totally gone, and tastes great and I do not have to add "softener salt" as a bonus.
My daughter uses the same system and loves it as well but I think she uses the "original filter" trio.
Things I like.........
1. uses "standard" 20 inch filters
2. No salt usage.
3. water tastes and smells great.
Cons.
1. filter changes are a tad messy, but not too bad.