First Need Deluxe Water Purifier XL
This is a great purifier just remember to get the XL which has a greater gallons/cartridge capacity.
THE KEY TO THIS GREAT DEVICE IS :
YOU HAVE TO BACKWASH OFTEN WITH A BLEACH SOLUTION.
Sorry for the CAPS but this is one purifier that heavily relies on frequent backwashing to keep up performance. The manufacture recommends using a couple of drops of bleach in clean water often. I called and asked!
Don't leave home without it and bleach and Always have a plan "B" if the device fails. What the plan "B" entails is up to you.
Price Paid: $110
Awesome product, stinks of quality. When you get your hands on it you realize you've gotten more than your money's worth.
I added an MSR Silt stopper to mine and find that I rarely need to backwash if at all. This unit can be configured with the included gravity feed bag for zero effort/calorie water filtering.
Go ahead and replace your existing system with this unit. it's a pleasure to use, super efficient, flexible, reliable, it will leave you wishing all your other gear was as well thought out, constructed/functional.
Not high maintenance, just high performance.