The new DELL 1704 is advertising a contrast ratio of 1000:1, response of 12ms and is currently $389 on their web page. I was wondering if the difference between the 1702 being ~850:1 and the 1000:1 warrents the price difference of buying new vs. used. When the contrast ratio's are that high can a viewer detect much of a difference? Also do you have any experience with DELL's policy re: dead pixels?

Thanks for your help