We looked at one, I forget the maker, for our new house. I decided that I didn't have the money right now - until we close on the house and all that.
I hate the water here. It's not as chlorinated as what it is in the midwest but if I can taste the algae taste in my water, I need a filter. At the apartment we have just the pur deal and that does a pretty good job, but I would like to have a real water filter system...
Since the water is not as chlorine enriched here, I think we're fine with what we have as far as washing clothes and all that. I remember that the water in Chicago has that "bleachy" edge to it. It's not bad to drink, just tastes different then it does here.