JC,
Potassium chloride as an alternative to salt is okay..BUT...(and this is very important)... it is potentially dangerous in patients with renal dysfunction or those taking potassium-sparing diuretics.
A lot of people find the taste so odd anyway that they prefer to abandon salt-
flavoured additives altogether!
I've always found that the safest and best substitutes for salt include acids (e.g. vinegar, lemon, lime, and other fruit juices), curry spices, garlic, onion powder, or even better real onion... and any kind of tasty herb you may love.
zuzu xx