Hi Def Tv's

I produce films/videos for a living and love my Panasonic plasma. Beats the pants off of LCD in ways very discernable to my eye. Beyond a certain (relatively normal) viewing distance you will not see any difference between 720 and 1080 displays. 1080i is currently the broadcast format with the most stations. NBC, CBS, PBS, and cable stations like TBS and InHD are all 1080i. 720p is the format used by FOX, ABC, and ESPN. So, if you have a 1080 display, some material is being uprezzed anyway.

Both LCD and Plasma have a life span rated in hours.

Each technology (including LED) has it's own pros and cons. You'll get a bazillion opinions on which is best but you need to do your own research and then decide what is most important to you.