Pressure Reducing Valve at water meter--need some assistance--how install, what parts, tools. Newbie
The picture of your neighbors is a PEX pipe. The first PRV is national pipe thread. The Second one is  PEX and it's very easy to do this work. If you're using PEX then the second one is the obvious choice. You need a crimper and a pipe slicer. That's it. That being said, by the time you buy those tools and the PRV you could be pretty close to 600 bucks anyway.