I have a 36" JVC I bought about 4 years ago, want to upgrade to atleast a 47" or 52". The prices keep coming down every month so it is a tough decision, especially for someone as scottish as I am. I flat out hate seeing something I bought 6 months ago sell for half of what I paid for it....
Do some searching online. Some practical things though from my setup. I built a an 8ft long by 5ft high by 26" deep entertainment center and don't want to part with it so I need a table top type [NOT going to pay the kind of money they want for flat panel]. My buddy has a 65" Pioneer Elite, he's had it since around 2000, it is a projection and it is only one of several he has owned over the years. He's a stickler, he's having the color guns replaced pretty soon and with the ones he had before this he would have them tuned up every year. That was an aspect of projection TV's that I was not aware of. I was looking at a few of the flat panels at Sams club the other week when I was stocking up on UPS's and the 52" I was looking at, Toshiba EDTV, was $1900. I will admit it was tempting but you'd be reading about me in the news as the 6'5" husband that was beat to death by his 5'4" wife with it....