Just bought one and let me tell you, 720p or not it is dirt cheap for a 50" TV. They were snapping these up in droves today at Sears. I went there very late this afternoon during their friends and family event. One of the clerks claimed he made several hundred dollars in commissions on it alone. The store was mostly empty by the time I got there but there were 3 people buying this thing right in front of me, site unseen. One guy goes up and goes I want that cheap plasma and I need it before father's day, the clerk said no problem they're sold out and coming on Tuesday's truck. I actually went there to measure it and look at it, because I had checked the stock online and knew they were already sold out before I even got there, didn't even take the truck, figured I'd buy it online instead and pick up later.
Actually appears to have a decent set of features for the price, 3 HDMIs, optical out, two component etc. Supports 24p sources, wide color gamut etc. Aside from being 720p it looked to have a fairly decent picture in store running a Sharp Aquos demo Blu-ray of all things. Also extremely thin for the price range for those looking for a thin TV, doesn't matter too much in my setup, I have a strange unit with a large wood upright back that mounts the set close to the wall but not on it.
I'll run some in home calibrations on it when it gets here and let you know how it looks. It is to replace my 1080p 42" Insignia LCD, which while nice is irritating in the fact that like most LCDs has uneven enough backlighting to become irritating espeically when you get used to the uniformity of a good plasma, plus the viewing angle is no great shakes. Honestly my cheaper Emerson plasma looks so much better than the Insignia I was tempted to switch them several times already. Following this upgrade, the Insignia gets relegated to the computer room, old iLo goes to my stepson's room, and the older Insignia gets wall mounted in the breezeway.