Just to let you know, the failure of PB was related to chlorine, and the bad connectors and crimp rings they used. I am on a well, and my whole house is still piped with PB and I have no trouble whatsoever. I did replace all splices with shark bites, and I piped a new bath in CPVC, with shark bite couplings to PB.
I have a manifold system with all home runs, which I like a lot.
I personally like copper, sweated, as I don't completely trust connections that depend on an O ring, but I cant use it due to acid in my water.
If your piping is very limited, you are probably best with CPVC, Just wanted to fill you in on PB, which is still extensively used in Europe where they don't legally flouride and chlorinate their citizens.



PS Id run that vent up through the roof if you can. Anything made by man can fail.