Plastic vs. bronze
Rob and all, Well you know where this is going, if given the choice between the good looking John guest fittings and Sharkbite, I'll go for the latter every time. Although not ever having used the Guest design, I have used plastic compression fittings on PEX that necessitated wrench tightening and found them to be on the difficult side of installing in tight spaces and always leaving me with the concern that the'd fail. I might add here that I never had one fail but heard third-hand stories of failure, but then who knows how accurate those stories are? If it's a matter of expensive or cheap when buying these fittings, hey we're talking $5.00 or less per bronze fitting and even on land, that's not a big investment in a plumbing repair not to mention the marine cost multiplier as soon as one steps aboard to fix anything. Folks can keep their plastic fittings and pocket change difference to buy a cup of Starbucks. The bottom line for me would be Sharkbite every day and twice on Sunday. Glyn Judson, E31 hull #55, Marina del Rey, CA