Interlaced V Progressive
The difference is purely the way the information is displayed, it is the same information.
With an interlaced picture in the 1st pass, it displays lines 1,3,5,7,9,11...etc in the second pass it displays 2,4,6,8,10,12...etc, the jaggies come from the picyure moving slightly between the 1st and 2nd pass. With a progressive output all of the lines 1,2,3,4,5,6,7,8,9,10,11,12...etc are diplayed at once, hence the jaggies are removed and the picture appears brighter and better focused.
Or at least that is how I Understand it. I'm sure somone can correct me if I'm wrong.
So....the proV takes the interlaced picture, displays it progressivly and upscales it to say 1076*768, The pany ae100 then downsizes the 1076*768 to fit its panel res 848*480. Theoetically I beleive that a Progressive DVD player outputting 480P should therefore give a slightly superior picture the proV because ther is no scaling going on in the pj. However, the pany be all accounts works better with the VGA input than the component inputs, so the difference is probably negligible.
Given the choice and owning an svideo capable dvd player and sky then the proV is the obvious choice over a progressive DVD player. Cheaper too!