Best format for iMovie input: DV or AppleIntermetiateCodec

I thought (and I think I read here several times) that the best input for iMovie, if you use a MiniDV camcorder, was to import the DV files into the app.
Now I have read an article ( http://imovietricks.blogspot.com/ )where it is said that iMovie does not properly work with those files and that a previous conversion to AppleIntermediateCodec should be give better quality.
Can someone give more information about this subject?
I think is a very interesting subject not only for the quality but because AppleIntermediateCodec files are half the size as DV files which make them more easily stored.

I have only DV camera and this issue is very important to me. I have read probably all the threads about it and have seen no solution. I even bought an e-book from a guy who said here that he knows the solution (but didn't of course open the secret here in forum) and guess what he recommended in his book? To convert the files to AIC.
As there have been so many discussions about it then I wouldn't say that iMovie works perfectly well with DV. Even Macworld mentioned this in their review of iMovie '08:
+"...The bad news is that in order to get this real time performance without renders or progress bars, there is some sacrifice in quality. For interlaced video such as DV and 1080i HDV, iMovie now uses single-field processing. This means every other horizontal line of the video is thrown out, which reduces the sharpness of the footage..."+
http://www.macworld.com/article/59668/2006/12/imovie08.html
Sorry, but I have difficulties believing anyone who claims that iMovie '08 handles DV fine. If all these reports were wrong and iMovie really could give full quality from DV then Apple would have refuted such reports (especially ones by popular magazines like Macworld) and given some guidelines.

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