I'm also very appreciate of Christian's efforts with cudaminer. Until I can post in the main cudaminer thread, I'll post this here...
I've been following the cudaminer conversation a while, and its getting tough to track card stats with each new version, so I created a public google doc to store any stats you might have.
https://docs.google.com/spreadsheet/ccc?key=0AjMqJzI7_dCvdG9fZFN1Vjd0WkFOZmtlejltd0JXbmc&usp=sharingPlease share on the main cudaminer thread if you are able to post there, and post your card stats and settings/notes.