It’s not often that a piece of technology, particularly one dealing with PCs, lasts six full years on the market. Amazingly, that’s exactly how long Apple’s 20″ Cinema Display made it before receiving the inevitable axe this week. First introduced on January 28, 2003, the 20″ Cinema Display provided a happy medium for consumers looking for something a bit bigger than Apple’s 17″ LCD and smaller than the 23″ Cinema HD Display. Now, just months after Apple introduced its all new LED-backlit 24″ panel, it’s finally