Hey I really appreciate your help,
But I just found something out ... OK, you're going to laugh, but it will make you realize I was telling the truth about the difference in DVD quality.
I was guessing, but I was wrong when I said if the show was originally shot in HD .... what I found out is that ... the DVD that I saw that I said upscaled to high definition are called anamorphic widescreen DVD's. Through my research last night, I found that out.
Now you guys probably already know what I'm going to say, but I found out that when the anamorphic DVD is played on a widescreen TV, it releases all of the pixels, in contrast to it being matted which was using around half the pixels, anyway here is the article.
I knew I wasn't seeing things...
http://www.audiolinks.nl/anamorphic/anamorphic.htm
I had to do some research and find out why this CSI Miami first season was a true 720p on my set, it blew me the #%$& away guys really.
All I can say is for sure that I now know why, & if all these anamorphic widescreen DVD's upconvert like this CSI Miami, and if this is the way they are going to be made, I will not be getting Blue Ray. Believe me guys I know that HD look, I watch CSI Miami every week with no box, just an antenna and my TV, maybe it's the set up I have because you all enlightened me with the fact that upscalers work with fixed pixel or fixed panel resolution and that's what I have as well as you just telling me the fact that my set has a 720 up scaling chip.
So maybe it's the fixed pixel, the player, the chip in the TV, & the anamorphic DVD all working together, if that's the case, I wouldn't want anyone reading this thinking all they have to do is buy this DVD player and they have a 720 picture.
All I know I'm getting HD going this route.
Believe me you see that picture of the alien I have in the upper left hand corner, that was me watching the CSI Miami box set.