Those of you with these hair dryers, whether Pibbs or the lower-cost models... could you measure the diameter of the bonnet please? I am trying to decide about buying a new model, but I need a really big hood. We have a generic inexpensive plastic model now that supposedly has an "extra-large" hood - that hood has a 14" diameter (external), which barely fits my hair alone for deep conditioning, let alone with the jumbo-size rollers I would need. So before I "upgrade" I need to know whether there are dryers out there with larger size hoods. I searched, but am either using the wrong terminology or this information is hard to find - Google only gave me two sites with actual diameter information. Thanks. 
