To find the best paper coffee filters, CR tested seven filters from brands including Amazon, Costco, Melitta, and Target.

Water spots can be a real annoyance. You clean your glassware and think it’s been dried properly, only to pull out a foggy, spotted glass that no one wants to drink out of. Enter the coffee filter.

It was a dumb mistake. I grabbed the biggest package of coffee filters -- a pack of 1,000 -- only to discover much later that I’d picked up the wrong size for my coffeemaker. Coffee filters are not ...