I may be stirring the pot here,but as a fella on tv used to say away we go..I like Lucite stems better than Vulcanite because they give more color options,and they don't oxidize.I don't clench so the hardness isn't a factor to me.This is just my opinion and may not apply to anyone else..Now for another and the real reason I don't really care for Vulcanite.I can taste it.It's kinda like licking an old bowling ball..Yes I have licked a bowling ball..I said all of this to lead up to this question.Are there different qualities of Vulcanite? Do some pipes use a better qualitiy than others? If so how does one tell which pipes do?