Is the issue that high end has poor quality or that Stereophile will not give a negative review. The first point is hardly demonstrated by what Sean presents as evidence, although it is part of the ideology of many here.
The second question can be more easily assessed. I fully expect that one can find few negative reviews unless you try to read between the lines. As long as magazines accept advertising, I suspect that they cannot give a negative review to an advertiser or a positive review to a non-advertiser. Dudley tried this in Listener and you see where it got him. I must say, however, that many of his observations both in Listener and in Stereophile are wrong in my experience.
The second question can be more easily assessed. I fully expect that one can find few negative reviews unless you try to read between the lines. As long as magazines accept advertising, I suspect that they cannot give a negative review to an advertiser or a positive review to a non-advertiser. Dudley tried this in Listener and you see where it got him. I must say, however, that many of his observations both in Listener and in Stereophile are wrong in my experience.