Progressive DVD players?


I am going to purchase a new DVD player and am considering the Sony S7700 (being discontinued). I don't own an HDTV, or HDTV ready, TV that can take advantage of progressive scan, but I will probably purchase one in the near future. Is the quality of progressive scan pictures that much better? I will use the unit 70% for music, 30% for DVD. I am interest in your thoughts on the different players out there.
robk
Yes progressive IS better. No fancy terms, no lengthy theories on why, it is just better to watch than even component dvd. I would like to suggest a player if you do not mind....the Toshiba SD-9100. You can find them second hand for around $500. Well worth the money. You won't de disappointed.
There is an article about progressive scan and HD in the current issue of The Perfect Vision. I found it to be very informative. I've lent the issue to a friend so can't refer to it at the moment. If I remember correctly the essence was that progressive scan is better if you have a monitor that can handle the signal. As with audio electronics there seems to be a wide variance in the capabilities/quality of HD and Digital monitors and progressive scan DVD players. I encourage you to purchase a copy of The Perfect Vision.
The picture quality of progressive DVD players is definitely better than that of non-progressive players. The main improvements you'll notice are a tremendous reduction in shimmering and "jaggies" in the picture quality, especially when there is a lot of motion or vertical lines (like a cityscape) in the picture. There isn't any reason, however, to purchase a progressive player unless your TV is capable of accepting the input from one. If it isn't, the picture quality won't be any different.