My brother has been using the 2-filter under-counter system for years and I recently installed the 3-filter under-counter system. It's been working wonderfully for a good 7 months now - no complaints.
The filter system for which I purchase these filters is a fabulous value. The water tastes great, a lot of impurities are removed, and the system fits in the small cabinet under my kitchen sink. If you don't have room for/can't afford a reverse osmosis system, this is the way to go.
2 adults & 4 dogs all drink filtered water. Based on my research, this unit is tops in filtration and safety. Great guarantee and excellent filter replacement system- shipping and installation.
Pros: Clean taste, Durable, Easy to clean, Easy to install, Long lasting filter