There is a problem with your poll. AnyDVD is a decryption/ripping program, and doesn't fit neatly as a copy program since it has no inherent compression abilities. CloneDVD has no decryption/ripping capabilities, but can compress.
You are comparing apples and tangerines here.
Without knowing the strengths of each program your poll will give you little useful information, other than as a popularity contest. AnyDVD's great strength is its ability to work in conjunction with other tools, especially free ones like the very robust ripper DVDDecrypter, or the good transcoder DVDShrink, not to mention the superb quality that can be achieved in compression using DVD Rebuilder or BD Rebuilder.
There are times where each of those tools might be appropriate to use. Knowing which one is part of the process of learning dvd copying programs.