i have to agree with lip here, if you can explain to me why roors pull the smoke through water better than a normal glass bong please do. u inderstand that they are shaped like a piece of lab equipment, i dont understand why this makes a difference. every glass bong i have used has hit the same, which is to say very well. you inhale on the top, the smoke passes through the water and up the chamber, no smoke escapes, you pull the slide. nothing to it really. please explain to me where in that equation roors are better than normal. i will buy that they may be higher quality and more durable but not they hit better. unless we are talking about the multiple chamber ones.