I'm glad there were a couple of people chime in to mention Brigham pipes. Now, I've only ever had Canadian made Brighams (estate finds), and they had been very solid smokers in my experience. However, I have a few friends who own more recent Brighams, and they have absolutely no issues with them. For the price, they have to be one of the better deals around, although overlooked by so many.
Also, my friend has a Lorenzetti that he swears is his best smoker. I do not know how many pipes he owns, but I know he smokes numerous bowls a day, so I trust his judgment on it. I know of no one else who has one so I can't say they are underrated or not, but perhaps they are overlooked as well