We have found the cotton filters simple, easy to use and last decently long.
Very happy with these! Easy to use and clean. Can't remember if there was different sizes so this may be my fault - I would have like them to be just a tad bigger but other than that, very happy!
I can't imagine why I used anything else before this. Will save me money every month, so easy to wash and dry, and I dare say the coffee tastes better! Happy me, happy earth.