What Hi-Fi reviewers do not have a clue IMHO. It is also 90% advertising. It's not that they only review low to mid-fi equipment, it is that they seem to like the cheaper stuff over the higher end stuff by the same manufacturer. When the Rotel RCD951 CD player gets 5 gold stars and an editors choice award and the RCD971 gets 3 stars and so so comments, it makes you wonder who is listening. I think they listen to a lot of Rock music so if the component is rough sounding they think it is good.
They also have a phony rating system. A component rarely gets less than 3 stars. Most get 5 stars; and there seem to be three levels of 5 star ratings; 5 stars, 5 gold stars, and then the 5 star editors choice. They do not want to piss off any potential advertiser.
The British magazine that I have always felt does an excellent job reviewing low and mid-fi equipment is HiFi Choice. Go to http://www.hifichoice.co.uk/