Quote Originally Posted by indysmoker View Post
Some say (I agree) that r/o has better flavor because the oxygen hasn't been boiled out of it. Distilled tends to have a 'flat' taste.
I'm pretty sure distilled water that you find in the grocery store is more free of contaminants than the reverse osmosis water.

You don't boil out oxygen when distilling. If you did that, you wouldn't end up with water. The process works by taking some water, boiling it so that water evaporates, while the impurities in the water does not. The evaporated, pure water vapor, is allowed to condense and is collected.