I'm starting with my own RV in a couple months and I'm now learning about water filters and such. I've been reading alot about berkey filters and that they're a great backup because you don't need electricity to run them, they're inexpensive, and last a long time. However, I don't know anyone personally who has one and I'm hoping someone on here can shed some light. i think I'm gonna go for it unless i hear someone has some bad input. 
Thanks - WO