I have a pipe that has a wide chamber ... my LJ Peretti, here it is with new stem:
I got it off ebay from modernchicago and he described it as "have a bowl the sized of a golf ball"
That being said, I don't smoke it much anymore, because all a wide chamber does is make for potent puffs, it doesn't really make for a lengthier smoking time.
A good long smoke, is about having a tall chamber.
Now as far as your specific question, I haven't noticed a blend being any different in one pipe from another ... except for whether that pipe hasn't been cleaned in a while or not. Dirty pipe or pipe with a lot of cake build up, means you're going to be tasting some of the past smokes.