I am total analysis paralysis in buying a HD TV. I am looking for a 42" that is truly HD and the specs on these things are all over the map. If you had to chose say the top 5 specifications that really are important for excellent picture quality, what would they be? for instance, I've been told that true HD is a minimum of 1980x1024. Why is a 1024x768 *not* HD ????? What about Image and Dynamic Contrast ratios? for instance one model is rated as 900:1 and 1800:1, and another one is 1100:1 and 8000:1 --- why does that matter? Picel response time - does the difference betwe say 5 & 8 ms really matter? Will it be that noticable? Any help - or point me to a web site document that spells this out - would be appreciated.