I have been repairing Apple products for a living since 1998. Currently I own http://www.etechparts.com, the nations leading wholesale supplier of iPhone, iPad and iPod parts. I previously co-owned www.missionrepair.com, was the operations manager for iResQ.com, and Purchasing manager for MacResQ.
I have experience repairing almost all portable Apple products but, since we dont do repair here at eTechParts, my real expertise is with items equal to or older than iPhone 4, iPod Touch rev 2, iPod Classic, and Pre-Unibody mac Laptops. My repair experience dates back to the original iPod, original iPhone and powerbook 1400.
I have a lot of respect and admiration for iFixIt.com and have known them since the beginning when they were called ipodfixit.com.