I'd like to make most of the plumbing with Pex but the zone valves, isolation valves are all sweated connection so I'm not sure there is a savings. I've already been on Supply House, great site. I'll likely be placing an order through them. Can anyone give me some suggestions on where to source the insulated pex used for direct burial (or name of manufacture)? I'll be using 1-1/4" and have less than 50' run.