There are numerous threads on this; the panels are identical, except that the 1000 has (1) a longer warranty, (2) a different frame, and (3) comes with a video card installed. The 503 requires the PDA5002 video card, but unlike the video card with the 1000, it has a DVI port.
Note that the 1000 prices have come down some; while the 503 is cheaper (and can be had mail order from places like Dell with the video card), the narrower gap may suggest to some that the longer warranty is worth the $$$.
But the key point here: the plasmas themselves are otherwise identical. One is marketed to consumers, one is not, FCC Class B vs. FCC Class A.
That's it.
Cheers
Note that the 1000 prices have come down some; while the 503 is cheaper (and can be had mail order from places like Dell with the video card), the narrower gap may suggest to some that the longer warranty is worth the $$$.
But the key point here: the plasmas themselves are otherwise identical. One is marketed to consumers, one is not, FCC Class B vs. FCC Class A.
That's it.
Cheers