I have to admit, my wife was watching tivo, and one of the tivos is modulated and one is piped in using component video. Clearly the component one looks better. The surprising part is my wife seems to favor the one that is modulated over coax.
I saw it on the screen today and I have to admit it really made a difference in the picture so much so I thought it was the component feed since the tivo screens were clear(er).
I did not expect to see as much of a difference since I had a 2500 hooked up previously (it still is stage 3 vs stage 2 filtering on the 2500). Not to say that I do not think the filters worked, I just did not anticipate them being as apparent since I was already using the 2500 and comparisons of this sort usually seem hard to compare clearly.