In my experience, it's not worth it under 46" anyways .... but that's just me. So if that's the size you have/want, then 720p should be all the TV you'll ever need. But if you go above 50" then it's probably worth the investment. As for replacing your 720 for a 1080, ask yourself this - are you already truly happy w/ your TV? Do you keep asking yourself, how could this get any better? If so, save your cash for a blu-ray player or a set of golf clubs or something. 1080p is nice, but it's not always necessary for every person.
I chose my 42" Panasonic 720p Plasma because comparing it to the 1080p version gave me the higher capable resolution, but the 1080 set lowered the contrast ration significantly. I'm extremely happy with my TV and don't sit within the 4ft necessary to notice the theoretical difference in my 720p-1080i content. Just my thoughts on the matter though.
“An engineer explained to us that hundreds of ear impressions were gathered in the name of research, and while each one obviously boasted its own unique shape and size, one single characteristic remained uniform across the board: the entrance into the ear canal is not a perfect circle, it's an oval.”
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In my experience, it's not worth it under 46" anyways .... but that's just me. So if that's the size you have/want, then 720p should be all the TV you'll ever need. But if you go above 50" then it's probably worth the investment. As for replacing your 720 for a 1080, ask yourself this - are you already truly happy w/ your TV? Do you keep asking yourself, how could this get any better? If so, save your cash for a blu-ray player or a set of golf clubs or something. 1080p is nice, but it's not always necessary for every person.
I chose my 42" Panasonic 720p Plasma because comparing it to the 1080p version gave me the higher capable resolution, but the 1080 set lowered the contrast ration significantly. I'm extremely happy with my TV and don't sit within the 4ft necessary to notice the theoretical difference in my 720p-1080i content. Just my thoughts on the matter though.