Multichannel Preamp

I had a thread some time ago (see end of post) asking about this subject. At the time many of the good (or only) multichannel preamps available at a bargain were older processors made for home theater that no one wanted because the technology was outdated. Now, you have Bel Canto, McIntosh, McCormack, Audio Refinement (to name the ones Stereophile "Music In the Round" has reviewed) and some others who have made simple multichannel preamps for multichannel DVD-A, SACD, or connection to a DVD player with its own decoding.
Now that this much time has past, can anyone compare these units as well as any new ones? Dare I ask which is the best?
Thanks
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