So when I bought my camper last spring and added one of those blue filters my coffee tasted like crap.
I ordered a dual filter kit assembly from Beech Lane. Don't think I could have made it cheaper.
Also with hard water in my area I want to keep my shower and plumbing free of hard water deposits so I got a portable water softener. Softener just stays on the back cargo carrier.
My set up goes Blue filter-Softener-Blue filter- Beech Lane Filters. I just happened to have a second blue filter handy and figured it would help with the softener taste or in case the resin beads start to migrate through.
Coffee tastes good now. Still use a Brita though. I believe the blues are 20 micron and the Beech Lane are 5 and .5 which I just pick up at the local hardware store.
All on quick disconnects or I would be taking three hours to set up. Time to fill the fresh water tank, just plug in a flow meter and add what I think I will need.