I have subscribed to Collectible Automobile since the 2nd issue and do not want to miss an issue. Some have cars featured that I am not particularly interested in, but then, it's a big hobby and I always read all the articles. Details are always excellent, and they have reference articles about related literature and scale models.
Hemming Classic car is also a great mag and I subscribe to this also. It is more "casual" than CA and has more articles about the industry and other related topics and that keeps it interesting as well. HCC grew out of the old Special Interest Autos magazine that was also from Hemmings.
Both magazines have established authors and new authors. Both offer a great deal of insight into primarily American automotive history with occasional excursions into foreign makes. I will keep subscribing to both because they are different enough from each other that it stays interesting.
I also pick up several different magazines at the newsstand but do not subscribe - Ol Skool Rodz, Car Kulture Deluxe and several other "rat rod" type pubs because those folks are crazy and build some amazing cars. They also have pin-up girls.I used to subscribe to Old Cars Weekly, but have lost interest several years ago, dunno why. I also get several club publications: AACA, SDC, HET, Divco Club, Velie Register, Society of Automotive Historians.
I guess I read a lot.