I switched to the Unicel C-5315 (Type B) filters last year. I bought 2 from Amazon and have a bucket where the one that is off sits and cleans in a chemical bath while the other one works. Every few weeks I swap them out. They are far better than the intex filters I still need to use up and throw away now that I think about it.
Here is the chemical bath directions and I wish I could post a link to where I got this but I don't recall where actually:
1. How-to clean a filter cartridge - 2 cartridge method.
1. Get TWO cartridge sets for your filter.
2. Find a plastic container large enough to completely submerge the cartridge, when 3/4 full.
3. Fill 3/4 full with clean water.
4. Add TSP (tri-sodium phosphate) at the rate of 2lbs per 5 gallons; mix till dissolved.
5. Remove dirty cartridge #1 from filter.
6. Install clean cartridge #2 into filter, and restore filter operation.
7. Spray off dirty cartridge #1; spray carefully BETWEEN the pleats.
8. Add 1/2 cup of bleach per 5 gallons, to the cleaning solution, and mix.
9. Place cartridge #1 in cleaning solution, and cover.
10. Leave cartridge #1 in cleaning solution for 24 hrs (alternately: till ready to swap!).
11. Remove cartridge #1 from cleaning solution; rinse carefully and thoroughly with water; allow to drain; rinse again.
I'm tempted to try the 'rinz-n-reuz' filter option too. I looked it up. The concept is easy enough. I'm curious. At least I'll post back here and let you know if it is not any good. Anything is better than the default Intex cartridge filters.
I'll also buy another couple of the Unicel filters and extend double the bull-pen of spare filters on hand to cycle.