I subscribe to Rider and American Rider and they're OK. Interesting stories about road trips and lots of model info and gear recommendations. When I'm bored in the airport I'll occasionally buy one of the American Iron or Bagger magazines but they seem to be aimed squarely at people that want to do a lot of customizing or like the chopper look.
Actually get many, many times more good info here at this forum. Treat it like a magazine subscription, make an occasional contribution to keep it running smoothly, and simply enjoy!