This gets used daily at my house. I use filtered water and it's working great. The issues people have been having are quick fixes.....if you don't firmly put the cone in the machine then yes, it will overflow. Press it firmly back when you've loaded the cone filter.....only use the gold filter that came with it. If your coffee maker stopped running then clean it out and put a filter in the resovior. Things have to be lined up perfectly or it won't work.

That being said, we LOVE this coffee and tea maker. My husband is obsessed with the specialty shot so we can make a latte for him. The foaming arm works well too when we make lattes.