Ecowater Vs Culligan . In fact, the resin (which does the softening) probably comes from the same factory in china. Top 3 culligan water softeners. Which is the Best Water Softener? Vs. Culligan Vs. Eco Water from homesenator.com June 24, 2014 patent 8,180,489 b2 If to go with the price, then one can always choose culligan. Call us now to solve your bad water problems.