https://www.amazon.com/HydraPak-42mm-Filter-Cap-Preparedness/dp/B0D3XGW1J3
From the company that makes my favorite water bags. Filter is longer so it filters faster (more fibers exposed to filter water).
Katadyn is $29.95 so not much difference in price.
The filters are very similar and you can find both Katadyn and Hydropak for a fair amount more money than the Amazon price.
(Disclosure—I got this from a backpacking magazine that is often pretty useless. Not sure what possessed me to read their article).