I am redoing all plumbing in my house.
1. Should I go with PEX or PEX-Al-PEX pipe for showers and sinks? I've read the PEX-Al-PEX has slower heat loss and better flow rate. And what size should I use 1/2", 5/8" or 3/4"? I want to be able to have strong water pressure in the shower/facets.