EDTV plasmas look as if you're watching tv through a screen door.
HDTV plasmas do not.
I'd like to save the $1500 too, but I can literally see the difference and it's huge (to me).
It's tough to lay down 3 grand for a good plasma, but unfortunately that's what it takes.
Panasonic gets a lot of stroke, so I've looked at a lot.
Dell gets a lot of stroke, so I made a special trip to look at one of their HD 42" plasmas.
Both brands look much the same, they are very sharp, stark and ghosty.
The smoothest, softest, nicest looking HDTV Plasma I've seen yet is the Samsung HPR4252.
When I decide to pull the trigger, that'll be her.
Get in the car and go out and stare at these things. Make 20 or 30 trips.
Sooner or later you'll be able to see the differences and you'll be able to appreciate them.
The difference between a good plasma and a bad one are immense, and I don't have very good eyes anymore.

Good Luck!!!