Hmmm. Why doesn't Faroudja then in their specs for the 1500 mention hdtv cross-conversion? I don't doubt you're right, it's just that Faroudja is very confusing in this. So the reason why the 1500 is a special product is that it sounds like they had a lot of the old DVD players laying around from the DCS, and figured that they'd make a new player, the 1500, to get rid of them?
In any case, this is a bit of a moot discussion for me -- I don't see the value in getting a 1500/2000 over getting a 1000 and a DVD player with DVI output, inasmuch as the cost is significantly less. Granted, you're then at the mercy of the DVD player doing de-interlacing to get to 480p, but if you get a DVD player with DVI out and DCDi, then it should be pretty close to the 1500/2000.