Purchased the turbine with the Helix mouthpiece. Great combo. I upgraded from a 7" Grav beaker and couldn't be happier. If you're someone who thinks they can't handle a bigger rip, don't hesitate. I was a little intimidated but wanted a bigger punch so I went for it. Can't wait to add on to my Stax.
This is a great water pipe for a good price. The glass is nice and thick and the draw has is smooth and enjoyable.