I have slept on a hard side waterbed for 36 years- pain free. Recently it sprung a leak. I am trying to decide between newer traditional mattress or air mattress or a soft side water bed. The choices are overwhelming and pricey. I have spent hours online researching sleep number, purple, Caspar, tempur pedic not to mention all the choices in water beds. I would like to go to more traditional mattress but am leaning towards soft side water bed because I am worried about my back… Has anyone bought a iZone water bed? Any help would be appreciated. Thanks, LindaO