I purchased an inexpensive ($32) Dr.Grabow briar pipe over the weekend. I almost immediately noticed a difference in the taste of the tobacco. With the cob I was using (the Diplomat), I was experiencing a disagreeable after taste that I initially thought was the tobacco. With the first smoke of the briar, I did not notice it. I think it was the gluing used to glue the stem or at least it was some other aspect of the cob anyway. I had smoked about 15 bowls through the cob and it never went away. It suffices to say that, with the briar, it was a more enjoyable smoke.
Edit: can't see the image on my phone, I guess I did it wrong