Had RO and liked the taste of the water, but it was wasteful.
It also developed a costly problem after a couple years – a valve broke and was sending clean water down the drain 24/7 for several months.
It also took up alot of room under the sink.
Switched it out to an under-sink, in-line filter (better than a fridge filter) that is fine. The RO water did taste better, but the in-line is just fine.