Bests & Worsts Reviews from Amazon

I originally purchased this in January, 2010 and I loved it!!! In November 2010 it started shutting off while drying, at first it would come back on by jiggling the switch, but it became worse over time and I decided to send it in since it had a 2 year warranty. I like it so much, I ordered a second one so I wouldn't be without one when I sent the original one in, it cost $9.00 to ship it in, but they sent me a new dryer. All was well until October of 2011 when the new one started doing the exact same thing. Still under warranty I sent it in(Costing another $9. for shipping) and again they sent me a new dryer. And guess what, the second one started cutting off. I finally contacted the manufacterer explained what had been happening thinking they would at least replace it with a different model number, since this one obviously has some problems. No response, NOTHING. I understand that blowdryers do not last forever, but when they have a 2 year warranty, they should last at least two years not 6-10 months and this is supposed to be professsional quality? I have short hair, that dries quickly, so overheating isn't the problem, they havent been dropped or missused. I still have one working dryer, but who knows how much longer it will last considering it's predecessors, so I am still in the market for a good RELIABLE hair dryer. I Could have purchased a REAL professional hairdryer with the money I have invested in these, not to mention the time and frustration. It looks like some people have had success with this dryer, but how long had they had them before they leave glowing reviews? My experience took place over two years and yes, originally I had left excellent reviews when I first received the first one. BIG mistake.