Have you tried both Any Video Converter and Freemake for converting MOV to AVI?
I just tried AVC and it looks better to my eye. It takes longer to convert than FM but I swear it's better. I don't know how to do an A/B test in the same window with two AVI files.
Here's the Youtube upload of a test with each converter. I didn't use any brightness or speed editors for this test file. Just the raw video converted in each converter.
What do you think? Select the Youtube link to view this in HD.