To my way of thinking, "sauce" is blended to a puree (and frequently strained) while "salsa" isn't. So I guess the question is how you are going to use what you're making - if you're talking about something to dip chips in, I go both ways. On the other hand, if you're talking sauce to cook with, or as a condiment, I go both ways. (ha ha ha!) Just depends upon what I'm looking for at the moment.