As you may know im a bit of a water geek.

Berkey/berkefield/aqua rain are handy for every day use but expensive investment. Bulky. Heavy and the stainless steel is noisy with a metal lid. Get the plug kit and only use one filter at a time. You get more flow with more filters but it's actually over kill if you're putting the effort into pre filtering running clear stream water.

Charcoal and ceramic both have their uses. Read up on them. Don't forget you can double up with chemicals if needed on the dirty side.

Berkey is also more likely to be cross contamination with the nesting design the upper dirty chamber is not very good at self rimming and any spills can run into the clean chamber. The ultimate solution is to use a third pre filter vessel that runs a hose into the lid. Add a drip loop to the hose

Any way you do it have shock on hand for maintenance cleanings.

If you plan on bugging out sawyer camp bag setup is better. They're so cheap I recommend having one as a backup anyways.

Keep in mind with all the current production filters you cannot allow them to freeze after their first wet use. The expansion will cause micro fractures and ruin their absolute micron rating.