I had one of you competitor filters on a several weeks walk in the US and it failed me very early on; being very slow on a gravity set up.
Being new to it I did not have the back flush set up with me; you then have the option of carrying it not being able to use it for several weeks or ditching it, either not very good. I did keep it but now have the Mini Sawyer and am happy to learn more about it and avoiding problems.
To avoid clogging in the field I read it is desirable to backflush with cold but previously boiled water -otherwise you are adding to the contaminants in the filter. If convenient I pre filter through a paper coffee filter.
Good practice to test the night before your trip and take the filter out wet.