Sorry it took so long to get back. I use the QuadscanElite left at all the default settings. It's a lot easier to fine tune at the projector. I manually select both source (S video for digital cable, component for DVD. I also have to manually select input aspect ratio, 4:3 for TV or non-anamorphic DVD, 16:9 for the rest.
To get it to switch reliably I find that going one setting beyond the desired one and then going back to the setting you want works every time.
The QSE performs adequately and reliably when set and operated in this manner. Its big weakness is the user interface. But I wanted to keep the cost down because of the rapid evolution of scaler tecnology. I only spent $1100 on it. An upcoming QSE model is supposed to address this problem plus improve performance somewhat. If they keep the price under $1600, I'll probably buy it.
For TV we have digital cable, which is only marginally better than our regular cable on the lower channels. Since we use the system for 90% DVD watching, we can live with it. But it isn't gteat, that's for sure.
Dan