Actually my CRT is only 24" and it can only do 480i....I can barely look at it now but on SD content it still looks ok.
As for the TV, I just came back from Sony Store and some other electronics store. Here are my findings with regards to LCD, RP LCD, and Plasma:
-LCD: Best image of all the technology but poorest black level. Vertical banding is definitely in every single LCD tv out there. I have noticed that both the XBR and V2500 have very even vertical banding. They are all over the screen and are about 1-2 inches apart. I find the VB to be softer compared to other TVs but my GF says that it is even worse than my Westinghouse. The Bravia XBR mura effect is crazy, it is not obvious as long as there is ambient light, and if you are a few ft away. In a totally dark room, you can see the cloud easily and they have different patterns...the one I looked at had a BIG MUTHA ******* Cloud at the left and some smaller ones at the right.

LCD RP: I looked at the 50. 60, and 70" SXRD and boy I must say they suck big time compared to true LCD tv. I did not notice and green blob on any of the SXRD but the sharpness is no where near LCD. The screen is ever so rough in its texture and it looks really noisy. The picture is really soft even if you crank the sharpness to max and the screen looks a little fuzzy. The TVs have all been on for some time and is fully warmed up. Off axis viewing is nightmare... However, the best part is, I can barely see any banding at all. Regardless, I've written off RP, it simply doesnt work for me.
-Plasma: The picture is closest to CRT imho, but requires great care when using them. I noticed that manufaturers have written in the manual that they do not cover image retention, dead pixels, and etc. They did mention in the manual that image retention may occur and encourage users to keep the contrast and brightness low. Another thing to note about plasma is screen reflection. Unlike lcd, there is a coat of glass in the front and obviously you can see your own reflection on the screen as a result of that. Picture wise, I like the samsung quite abit. The color is quite natural and is slightly soft compared to LCD which some ppl find it unnatural. The only problem with Plasma is that it is hard to find 1080p screens that do not blow a hole in your pocket.
I still cannot make up my mind what to do

maybe i should just keep the LCD tv?