jenlovesty Eric B. and Kim L. research at MACNA will agree with you that RC is a one of the best choices. This would be on the appearence over time. Once all the data is collected I'm sure it will show you can make most salts work by adding what is missing.
I would encourage everyone to test thier newly made up salt water for calcium,alkalinity, and magnesium to see what may or may not need to be adjusted.