We are rebuilding our shower. The walls are open and we can do it with 3/4 or 1/2. We are using PEX. I am undecided. On one hand, I like the idea of increased water flow for nice strong showers with 3/4. On the other hand, the 1/2 fixtures are a lot less expensive and there is a lot more choice. Also, we like the idea of conserving water, especially since we have a private well. But, then again, I really like a nice strong shower. Is there any way to get the advantages of 3/4 without the disadvantages (expense)? (My plumber is also making a lot of noise about the idea of using 3/4 - I think that means the price goes up.) Does it make a difference that we want to use PEX? I have just a few hours to make up my mind. I have already bought both 1/2 and 3/4 valves, so I am ready - just don't have a decision! I'd love to have a good understanding of the issues - also if it matters that in the end the arm to the shower head is standard. By the way, we will be using 1 fixed head and 1 hand-held - maybe at the same time occassionally.