Another thread brought this issue up and I am looking for an experienced opinion. I am planning to use PEX to plumb my home utilizing a manifold for an all-home-run installation. I heard there was a problem with brass fittings. I was planning to use the crimp on rings with brass transition fittings. Do the benefits of using PEX make it worthwhile? I was a copper only fan until folks I trust talked me into using PEX. What do you think? Thanks.