After 4 years with no problems, my Baracuda G3 stopped moving. I pulled the diaphragm out, and sure enough it has a couple small tears. My question is, how do I compare the quality of the various replacements, and what's the best source? Leslie's wants $47 for what I assume is a Zodiac-produced OEM replacement. Amazon has a dozen different replacements...some clear, some yellow, some white...ranging from $7.50 to $26. How do I determine which ones are truly the "long life" replacements, which ones are decent quality, and which vendors are reputable? (All of the Amazon reviews are 4+ stars, so they don't provide a differentiating factor.) Will the OEM really last 2-7 times longer than the Amazon versions?