Does anyone know of a quality aftermarket brand of refrigerator water filters?The cheapest I can find the Whirlpool Everydrop filter for my refrigerator is $47.99. I think that’s ridiculous considering it’s only good for 300 gallons of water. Considering the way my wife drinks water I’ll probably need 3 a year. I’d blow it off but our water is pretty **** hard and I’d really like the refrigerator to last a long time. I’ve got a water-softener but the plumber said not to have the drinking water soft. Any suggestions?