My TV has DVI so I use HDMI into Darblet and a HDMi->DVI cable on the output.
I run mine in HD Mode at 40% and don't touch it. For Blu-Ray I can run it up higher, say 50-60% but I don't like messing with it. Above 40% and compression artifacts of OTA and Dish become more obvious. And I'm super sensitive and annoyed but those artifacts so I keep the Darbee fairly low. Even a low levels it adds a bit more pop and sense of sharpness and is worth it to me (granted I got in on the early price)
No pictures, I always find it tough to get good pictures of a CRT. Check out the reviews online with images.