I am looking for insight. I am the 3rd owner of a single-story home built in the late 80s. It has 3/4" polybutylene (PB) plumbing running through the attic with 1/2" PB branching off. We have 2 full baths, and of course the kitchen, and 2 spigots outside. The laundry and water heater are located in the garage, near where the main water line enters. In all, I have 12 cold and 7 hot water fittings.
Since 2014, I have had 5 pinhole leaks in various locations in the walls, at least 1 has caused flooring damage. I've had plumbers saying the house needs to be replumbed. Had 2 estimates done; one quote was for $26k (copper), the other for $10k (copper). Neither recommended PEX. Both discouraged it but their reasoning has to do with PB and not PEX.
That being said, as an avid DIYer, I'm looking at doing my own replumbing. I know I want to do a home run system but don't know if I want to do crimp, cinch, or expansion. Any opinion or suggestions?