I was a subscriber to Electronic House which is really about integrating electronics in the home, and therefore, has a lot of information about home theaters. The info, however, is NOT technical and the products within the magazine are purely driven by marketing dollars and not objective reviews. It was fun to read about other people's $250,000 theaters, whole house audio, etc for a while but it got old.
I don't regret getting their subscription, I've just moved on.