Don't even bother buying one right now. This summer they are releasing OLED tvs which are much more advanced than tvs out now. There is no point in buying right now as the most expensive tvs out now will be extremely cheap in the coming months.
OLED has been around for a few years now. Issue is they don't make a big screen with that technology yet.
They are talking about coming out with a 42" which in today's terms is considered small. Not to mention price will be higher than other technologies out there now.
I don't see it having a effect on led, lcd, plasma pricing right away due to smaller size and cost of the unit to make. But hey I have been wrong before.