When I did the comparison, I had the TV guy use the exact same source and put it on the exact same channel (for TV) and the exact same feed for the HD, they were already using the exact same cables, etc.
I even had him put the settings on the TVs as close as they possibly could.
The VT25 blew away the Samsung in every instance - it was not even close.
Again, this is just my opinion and others may very well like the look of the Samsungs over the VT25.
Also, the bezel of the C7000 and C8000 was not attractive, it looked and felt like grainy plastic - it cheapened the look of the TV a lot - again, my opinion.
That, and the HUGE font SAMSUNG on the TV versus the more subdued smaller font Panasonic made the Panasonic much more ascetically pleasing.
Actually it was not just my opinion, it was the opinion of my friend I had with also, and the TV guy...