I have the water filtration system and I love the taste of the water. I use the filtered water in all our cooking. I also use the home delivery service of salt for our water softener. It is very convenient, since I have a physical restriction on how much weight to lift.
With my old softener (not a Culligan) I went through 160 lbs. of salt per month with 2 people in house the majority of the time. Bought a smaller Culligan unit and now use 100 lbs.in a 5 month period. A 1440 lb. savings per year is substantial.