I have well water and installed, myself, the pressure tank, the in-line sediment filter with replaceable filters, a Kenmore water softener, and an Aquasana Whole House water filter. Before I put all that it, we had hard water, with iron staining, and some sulfur smell. Now the water tastes good, has no odor, and does not seem to stain. I can not tell you that everyone will get the same results, but I came out pretty good.
Aquasana does have all sorts of systems designed for well water that include various pre and post-filters and UV light systems. I just went initially with the standard replacement tank and installed it without all the fancy side filters, lights, etc.
But, whatever you have, I am sure there is a system to cover you.