The best replacement for paper filter is gold filter.

The best alternatives to paper filter are rated as following:
★★★★★  gold filter
★★★★★  k&n
★  gold tone filter
★  permanent filter
★  sand filter
  k&n filter
  cotton filter

Your alternative for paper filter is not listed? Suggest!
Speaking about paper filter, one probably shouldn't forget about french press.

Other search terms related to paper filter and their ratings are:
★★★★★ french press
You have in mind a companion for paper filter and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of paper filter in all years. Click on graph for more.
paper filter
gold filter
k&n