I gotta say that a lot of reviews must be tough because so many products from so many manufacturers really is SO good. It is the personal preferences that set them apart.
In projector world, the Sanyo Z4 and Panny AE900 are two examples of top notch, similarly priced projectors, yet some will swear that the AE900 is better, some will say that the Z4 is better. They both have good points and bad points and some people think that the good points of one are actually a BAD point.
This leads to some serious issues with how bad almost any product is when you really don't know your readers, and can't know them all anyway. Klipsch is a great example of a brand that is all over the map with people liking them. So, do they suck or are they great? All that really is left, in many cases, is checking out the quality of the build, putting down some BS on how it sounds, and taking a dB measurement. Have a nice day.
I'm not a fan of reviews not being published, but magazines looking to make money aren't trying to make us happy, and are trying to make money. That is, a manufacturer who makes a serious design mistake is not given the press they want and is given the chance to make their product better. No lawsuits about defamation can be brought when no articles are printed that are bad.
I like Projector Central where they say something simple like: We received a test Brand 'X' projector, model 'X' and it seemed to have some flaws with the sample we received so we sent it back and are waiting for a new review sample.
It definitely makes a person wonder what was wrong, and sometimes the review never comes... Much better than not mentioning it at all.
It has been brought up before that it would be good to see some poor reviews HERE as well since so many reviews are glowing. But, we have seen a few poor reviews. I just like the concept of having a 'currently being reviewed' area of the site or 'upcoming reviews'. Then a blurb on initial reaction. Finally a link to the blown out review. Might be cool and very informative when products show up 'defective'.