ive read all the comparisons between these models but hi-def or price are always the issue, so would appreciate peoples views for purely dvd use! options i think pw8 - phd7/8 - pv500 - 436xde like i said this screen will be stictly DVD use, love the idea of hi-def but think its to uncertain in its format and unknown requirements to base my decision on! so would you notice much of a difference, if so which one is better? of issue a little but why i have peoples attention... is the issue of 'horizontal line' in the pv500 found in the pw8/phd8? is there a huge difference between the phd7/phd8 thanks in advance!