I want a watermaker in the 500 to 600 GPD class and after walking through the Seattle Boat Show it appears their are several brands to choose. I was familiar with a number of them but had no idwa how many other companies are in this market. Margins must be healthy on watermakers. I noticed that on the surface many appear to use the same components and even the same rack. What company in this size range is considered the best in terms of quality, parts availability, and price. I understand this is a loaded question and would appreciate opinions. Right now I am leaning towards the FCI A516C that has option for commercial pre filter. Membrane size fits my space for mounting well and specs fit my needs well. Any and all input is appreciated.