If I build again I will not build on a slab, instead there will be a encapsulated crawl space and engineered I-Joists.
All plumbing and electrical cut outs can be drilled thru the I-Joists and not weaken the joists, loadbearing is strong and any leaks that did happen can be quickly repaired at minimal costs.
Pex is pretty good stuff, BUT it can burst if froze, rare but it can happen, connections can fail, and rodents can chew thru it, repairs are normally simple and quick.
All plumbing and electrical cut outs can be drilled thru the I-Joists and not weaken the joists, loadbearing is strong and any leaks that did happen can be quickly repaired at minimal costs.
Pex is pretty good stuff, BUT it can burst if froze, rare but it can happen, connections can fail, and rodents can chew thru it, repairs are normally simple and quick.