User Review: Katadyn Hiker PRO
I've used the Katadyn Hiker Pro now for several years, off and on, with the "off" periods only being when no filter was needed. It has consistently functioned well, and I've encountered no problems with the device. I would suggest minor alterations in connections, tubing, etc., but these are minor points--the only reason it doesn't receive a 5/5 score from me.
On a side note, Katadyn customer service was both pleasant and prompt in sending me replacement quick-connect fittings after my dog treated some as a chew toy. No charge.
Replacement cartridges are widely available. Very effective. Should I need to buy a new filter device, I'd likely return to the Hiker Pro.