Should I Buy A New Plasma Or Flat Panel Lcd Tv Now Or Wait For A Few Months?

I am planning on buying a Toshiba 50″ Plasma TV on black friday(the day after Thanksgiving) for $1699 at Best Buy that is regularly $2799. I am not sure of buying a tv now because everyone is saying that the prices are going to drastically drop after the new year. Others are saying that there are new technologies coming out also nest year. I am in a dilemma and do not know what I should do!?!?!?!? PLEASE HELP!!!!