Product review (5 stars): Yaaaay Ice.
I use this for my office to help facilitate me drinking more water. It's better with ice and keeps me from having to walk all the way upstairs to the ice maker.. (First world problems I know.) I've tried distilled water, the ice cubes are clear and tasty, but lack substance. They melt instantly when you pour liquid on them and are tiny.

Then I tried filtered water, and that gave me the ice cubes I was used to seeing, thick and solid and crunchy. They hold up to a few pours of liquid and make me generally happier.