I have waited along time to upgrade my trusty imac g4. I know there is allot of negative remarks, about the new imac's. gfx card, glossy screen, and now there is some negative posts about the 20'' models using a low quality "tn" type lcd screen. which is lower quality than what was used in the last imac model line. Does any body know what was used in the last line of imac g4's late 2004. will this screen be comparable or worse than my g4?