My pool has rusted out (2 post and bottom rail) and collapsed but at 20 years old it didn't owe us anything. I am looking at buying a new Sharkline Matrix from BlakeJ at PoolSupplyWorld.com. I also want to switch to Salt Water and need recommendations as to the SWG to use. I am looking at either the Intex Krystal Klear or the Saltron Retro when I order the pool. I know that these are both on the low end of available options but feel they will work as starter units. With buying the pool I want to start with a cheaper SWG. Reviews are mixed on both of these units but I am willing to try either one. would like to hear your opinions.