I use the cups and floss. I'm surprised it was stated that they clog fast. I don't have that problem at all. I haven't changed mine in a month or so. On purpose to build up some nutrients that my system had been lacking for so long. I do have 3 x 7" cups though so that could be the difference? Its much easier and less work than changing, hoarding, and washing filter socks.
I do like [MENTION=129959]s2k[/MENTION]s use of the filter pad across the top and ceramic media in the cups. I may try that down the road. I found that initially for my tank, the ceramic media was working too well so I removed it for now.