@fr8bil,
So ya wanna be dependent on a local dealer and pay a huge premium for the national brand name and their advertising and then a high profit to the dealer rather than be an independent DIYer by buying online and installing it yourself or have a plumber install it with part of your maybe $2000+/- savings.
And then, depend on their one'n only franchised or contracted exclusive territory local dealer for service, on the dealer's work schedule BTW, because they normally won't sell you the parts or tell you how to repair it yourself...
OK. Then I say buy the Culligan because they usually have the fairer price and their dealer is more likely to stay in business and to sell you parts and you can find a manual where the Ecowater guys usually won't do either and their equipment is not industry standard and Culligan equipment is industry standard.