Anything with stems made from acrylic are not for consideration. Any factory pipe I don't look at. If it is not from an artisan that I know has a comfortable stem I pretty much ignore. Any pipe that does not meet my specific criteria in terms of bowl height, inside bowl depth, inside bowl width, shank dimensions of 4..0-4.5 mm and weight also get no consideration.Pipes that are not smooth inside stem and hank that could cause the slightest bit of turbulence are also off the list, I know exactly what I like in my pipes and I refuse to compromise. Any pipe that does not pass a fluffy cleaner, does not smoke dry as a bone and cool, never needs a pipe cleaner to soak up excess moisture and basically doesn't smoke itself are all not happening. I am absolutely done with pipes that I have too work at to smoke, they will be perfect or they will be gone, I will no longer settle for an average smoke.