There really is no mistaking a Porsche Design pipe, is there? Whether the shape is the conservative '907', or the windswept, ultra-modernist '909' now before you, it will feature deep, concentric bevels to increase the surface area of the bowl, the better to dissipate heat. I must confess a strong preference to briar over titanium. A nice grain finds my love/hate meter swinging quite a bit more to the friendly side.
R. 'Bear' Graves