NONE OF THEM. Those diuretics are extrememly hard on your kidneys. Have you tried a low sodium diet and natural diuretics before? Here is a list of some you should try first. IMO, the best way to go is include these foods into your diet, and add in Green Tea Extract and Dandelion.
http://www.bodybuilding.com/store/now/gtea.htm
http://www.bodybuilding.com/store/now/dan.html
Apple cider vinegar -- is a natural diuretic and helps maintain potassium levels.
Artichoke -- natural diuretic
Asparagus -- contains asparagines, a chemical alkaloid which helps flush the kidneys.
Beets -- attacks floating body fat and fatty deposits.
Brussels sprouts -- cleanse the cell and stimulate thought kidneys and pancreas.
Cabbage -- breaks up fatty deposits.
Carrots -- speeds up metabolic rate and helps remove fat and waste from the body.
Cranberry juice -- aids in the removal of excess fluid from the body.
Cucumber -- stimulate the kidney and aid in the removal of uric acid.
Dandelion And Dandelion Leaf -- natural diuretic, and leaf key aides in the detoxification of the urinary tract.
Green tea -- natural diuretic and has been used for centuries in China.
Fennel -- has a calmative and diuretic property.
Horseradish -- speeds up the metabolism and helps eliminate fluid.
Lettuce -- aids in metabolism and flushing of toxins from the system.
Nettle -- has natural diuretic properties.
Oats -- contains silica in natural diuretic.
Tomatoes -- are rich in vitamin C that aids metabolism in the release of water from the kidneys.
Watermelon -- natural diuretic helps increased urination.