aqua fx salt water critter is a vendor on here can get you a awesome one at a good price. mines came with pressure gauge and a tds inline read out ask for russ. saltwatercritters.com
The typhoons from Air, Water and Ice. The customer service is top notch and have a great warranty on all the parts for the units. Recently had a problem with the automatic shut off and they sent me a new one as well as a part from my booster pump. Plus their units are thick-walled, very well built and have all the trimmings to get it working right away.