For me, Kinetico is the best. Been using it for over 12 years. Twin filter outdoor unit. It has auto backwash and the backwash is alternately using one of the filter. Also no interruption while backwash. You can still use like normal.
I had a cheap Diamond filter at my sink nonetheless until last year when there was water disruption at my place. When the water returns, the outside tap pre filter was coming out with muddy water. I didn't know that and had on the water tap in the house. The water was crystal clear. Mind you, I was shocked myself. I never had it service before even though they says should service and/or change the filter elements after 10 years. I had moved house and had it reinstalled with the service of the company and they charge me RM300 only 6 years back for dismantling and transporting over 30km to reinstall at my new house.
Bought it for less than RM4k 12 years+ ago. It is so worth it. I highly recommend it.
waterco vs bacfree vs diamond