I currently have a 27' foot round pool with 52" walls and an overlap liner. I am considering buying a bead receiver to convert my pool so I can install a replacement beaded liner myself which appears would be easier to install than a overlap liner to install. A few things I am not clear on. My old liner was a 20ml. What I am seeing online are 20 gauge or 25 gauge. I am thinking about 25 gauge because of the longer warranty. Is that the wise choice? Because of the expense if the new liner and water to be hauled in I want to buy a good quality liner but am not clear on what companies, online, are reputable. Can anyone give me some advice on liner thickness, tricks for installing a beaded liner and a good reputable company to buy a beaded liner from? I am currently looking on Poolsupplies.com and pooldeals.com. Has anyone ever bought a liner off either of these companies? Thank you in advance for your advice and help.