Thanks for the tips. These systems do sound better than tablets.
Berks take care of bacteria IIRC, there are sites that have all the specs. Few viruses are in water AFAIK. Boiling will also take care of bacteria and AFAIK viruses.
Katadyn filters are supposed to be good, but I preferred Berks. I like the all stainless steel housing. I dropped mine once and it’s still fine, a small dent but works. I did break one filter when it dropped, just bought a new one. I have 4 filters in mine as it filters faster. You can make 25 or more gallons a day if you keep pouring water in the top and emptying out the bottom. No water pressure or electricity needed, filters get changed seldom. No added chemicals like tablets - jsut good drinking water that is safe.
I highly recommend them. It is good to empty the inch or so of water that does not get filtered, out of the top part and also to clean the filter now and then. I only do it a couple of times a year as our well water is really good anyway. A new, washed green scrubbie works find and very clean hands or maybe gloves, can’t remember, skin oil isn’t good for the filters.
If I get some $ I’m going to get another as backup. It’s amazing how much water you really need just for drinking, cooking and basic hygiene.