The design of this product is really pretty; the first order I placed came with a dented piece  that need replacement ( trim part). But unfortunately now the plumber has to replace the  cartridges because the valves ( both) are noisy for some reason. 
We haven’t fully used our master bathroom because our remodel took a while and now we have to figure out how to make the shower system flawlessly. Most likely I will need to contact Delta as well.