1080p is the best, there are twice the pixels, but its not sensible right now, as there is zero sources besides blue ray that will play a true 1080p signal. But heres the catch on those 1080p sets, they have an upconversion process to bump up a regular 720p picture which is standard to around the 850 to 900p range, so inessence if you take a regular 1080p set and sit it beside a 720p set and you feed the same feed to both the 1080p set WILL look better hands down.
On to this tv, it has a decent picture with crude displating technology, those screen have the worst viewing angles, and do poorly in heavily lit areas, and the plasmas WILL out last the crt sets, they have 60,000 hour half lifes, wheres are crts are only around 40-50 thousand. Plamsa is nothing to fear other then high repair costs, it has the best picture besides the 1080p sets.
(the bulbs for dlp and lcd projection units are 200-300 $)
If anyone wants a slighty better deal on TV's come see me at the polairs circuitcity, i dont work on commission but we have everything, and I will get you a better deal then joe blow, and I will let you know all you wish to know!