Manual watermaker for a life raft & grab bag

[Trish Affleck]

Hi everyone,
I am after some help finding a manual water maker I can include in my grab bag or life raft. I am sure this has been a topic before now so any advice on brands, reliability, cost & ease of use, would be greatly appreciated.
Many thanks
Trish

oops, I forget to ask about what a good cache of flares would be for a trans ocean voyage.