Do Your Have A Criteria For Buying A Pipe?

After 20 years of pipe collecting I have come up with my own set of criteria for buying a pipe. If the pipe is going to smoke my flakes(98 percent of my smokes) I have a set of rules I follow. I want the pipe to be anywhere from 5.25-6.25" long,  a bowl height of 1.85-2.25, a bowl depth of 1.5-1.85, and an inside bowl width of .75-.82. I want the weight of the pipe to be from 45-60 grams.

I look at the thickness of the walls as that makes a big difference to me. I have owned thin walled pipes and I have to smoke so carefully to keep them cool and that is not my normal cadence. When I smoke, I don't want to have to think about it.  Now these measurements are all approximately give or take a little.  I clench most of the time while smoking so I need a comfortable stem made of vulcanite in almost every instance. 

Now the shapes of the pipes I buy are also part of my criteria with Dublins, Rhodesians, Apples and Billiards representing the vast majority of my pipes. I would be considered a lover of classic shapes for my flake pipes. It took me a long time before I came up with this as I used to just buy pipes based on their looks and never considered how they would smoke the types of tobacco I liked. 

I had to learn through trial and error(lots of errors) what I really enjoyed about a pipe I was smoking my flakes in. At one time I had pipes that weighed 90 plus grams, had huge bowls and were really not good for smoking flakes.  I finally realized that if I wanted to enjoy my flakes to their fullest potential, I had to think about the why. I have been enjoying my pipe tobacco so much better since  I began thinking about the pipes I was buying. Now when I look at pipes, I can whip though tons of them as many don't come close to any of my criteria. 

So are there any other anal, obsessive, compulsive, pipe smokers like me?