A couple weeks ago I put a lower flow shower head for the master bedroom shower. That is before I changed my tankless water heater. It did not flow enough to keep the water hot. I now have my new water heater in and the low flow shower works great.
I am now going to put in American Standard Flowise for the kids bathroom
American Standard Flowise 5-1/2 in. 3-Spray Water-Saving Showerhead in Polished Chrome-1660.717.002 at The Home Depot
I just ordered it today but it has good reviews. I will give a review after it gets here.
American Standard 1660.717.002 Flowise 3 Function Water-Saving Showerhead, Chrome