I am going to finish out the year with the pucks and bleach this year, but I am going to move to SWG next year and wanted to see if anyone had an opinion on any of the following:

http://www.amazon.com/Hayward-Aqua-R...549141&sr=8-20

http://www.amazon.com/Hayward-Swimpu...549158&sr=8-36

http://www.amazon.com/AQUA-RITE-CHLO...549158&sr=8-46

http://www.amazon.com/SRS-Inground-S...549141&sr=8-26


I have an 18x36 in ground vinyl pool don't know pump details but it is a sand filter. Just wondering if there is any problems with any of the models above that I should avoid.