I have found them to be great.
I have had a KS Lev, Raceface dropper and a T-mars, they all had far worse issues than the Reverbs have ever presented.
I have had 4 Reverbs, they have been changed for different frames or lengths but never for reliability.
The latest 170mm with the new style remote is a dream.
Service them once a year similar to my suspension and they are good as gold.