Dear CoolJ:
I agree with you that Knorr makes the best soup/stock bases.
Unfortunately, Knorr makes two kinds of bases. the ones that they sell in Europe, which I prefer, are more natural and not as strong tasting. The ones they sell in the States have more flavorings because they believe that the American market demands stronger flavors.
One way I use to intensify the taste of my chicken stock is that I roast the bones of the chicken before I put them in the stock pan. It makes a lot of difference.