I replaced all my PF's with RVS ones because RVS is easier to keep clean and I didn't like the brass or the idea of flaking chrome.
I also thought I could detect it taste wise - but did not check double blind (since I already bought the PF's and am not going back to something I don't like.) So taste wise (RVS being better for me) it could be a placebo-effect.

Received and tested my R.O. water. Here are the results.
With a TDS meter I got an average of 30ppm. Low, I now add Potassium Bicarbonate to bring it up to 80-100ppm.

I should have purchased a fuller range 1-14 test strips.

Get the set so you can read down to tenths, makes the process easier.