I have purchased a 20" Imac ( 2.66 Ghz Intel Core 2 Duo ) about 5 months ago . I have payed $1399 ( Canadian ) for it brand new with Ilife. Now ... the new Imacs are out with more memory , better look and speed. I am now thinking if I should sell my Imac and buy a 21.5" Intel Core 2 Duo 3.06GHz . Is it worth it ?? Much big of a difference ? I do not have too much computer knowledge but I wish to know if this is a good idea or not .