I have used the XL freeze pipe for a year now. I thought the glycerine coils were just going to be a gimmick but they are not. This bong produces the smoothest smoke I have ever had. It quite literally feels cold when you inhale the smoke. If you really want to enjoy the taste of your bud this bong is for you. It's sturdy and is well made. The packaging the bong came in is excellent and I just picked up a new recycler base, so I can't wait to try that out. It's worth the money.