Wait-wait-wait! Dude, don't go near Harvey Norman!
I'm honestly not terribly helpful on this subject as I'm still using my old CRT TV, but I know for sure that the last thing you want to do is go anywhere near Harvey Norman, Joyce Mayne or Domayne as they're all the same store and their staff will tell you anything to make a sale.
My advice, hit up the Good Guys or JB Hi-fi as you'll get vastly better value for money and for what it's worth; I'd go for something between 24" & 32" inches in LED flavour, LED TVs from what I've seen have the superior picture to LCD and are less Power Hungry and Temperature Raising than a Plasma.![]()