Are these 1080 “upgrade” regular DVD players worth getting?

They are not too expensive, but will they make my regular DVD look better on my 52 inch 1080p LCD HD television?

I already have a blue ray player (PS3), but I still have tons of regular DVD’s.

Are these “1080″ DVD players worth getting??

I have a 16 month old, 52 inch rear projection LCD, with HDTV, if I try to sell it how much is it worth? It sold for 999, but I paid about 1350 after warrenty and tax? Also it is a General Electric.
I already checked ebay, and there were no tvs that I could find in the same price range, as mine, they were either much nicer, or pieces of crap.

Im getting a Sony Bravia LCD high def tv. The 52″ will cost $4000 with tax, the 46..around $3000. Is the extra 6 inches that noticeable, does it make it all that much worth it? Please let me know in your experience

Money is sort of a factor and i wanted to know is it worth it to get an LCD for so much more for the same size than a plasma?

I’m buying a 50 – 52 inch LCD TV. I am seeing the prices for a 1080p almost double the cost of a 720p set. Is it really worth an extra grand to get the 1080?

also, any other features that you should make sure you get?
I don’t have a PS3 OR XBOX but I do have a PS2 and a Wii. I also have FIOS digital cable and a DVD player.

Money is sort of a factor and i wanted to know is it worth it to get an LCD for so much more for the same size than a plasma?