Which are the best reverse osmosis water systems with 5 or 6 stages that can be purchased in Mexico?

Hey guys, I am a complete newbie here to this website, and I have a quick question that maybe some of you could help me with! My family and I are currently moving ourselves to the UAE, after coming over for the past few years on 'extended holidays' :) The one thing I was quite suprised with...

I recently arrived in Cairo and have a questions how expats deal with water. I looked at a few previous posts, but I was wondering if anyone had more up to date answers. Specifically, I am considering three options: 1) Just buying tons of bottles of water (although I would prefer to not add...