thanks guys, for the reply! this is what i thought as well since it would be easier to cut a a pipe made with many strands than a sold pipe since their is simply more mass, at least that is my logic. however, when i called tw about this 2 people on the phone told me that multi was more durable, which didn't make sense. i'm wondering if they are just pushing more expensive product or these college kids just don't have a clue. probably the later.