I love my PV500, but the simple answer is... use your judgement!
Go and see all the displays you mentioned, get the dealer to put some HD and SD content on for you, compare the "off air" pictures and the picture from dvd.
I know it can be tricky trying to see these displays at their best in store, most are badly set up... I went in House of Fraser on Oxford Street the other day, and 90% of the lcds and plasmas were displaying a terrible terrestrial signal, the few that were running a dvd source had the aspect ratio set wrongly.. no wonder the poor old public "can't see what all the fuss is about".
Sorry, went off on one there...

... but if you are spending a couple of grand on a new display, you really need to see them for yourself!
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