I am subscribed to both and eagerly read them...cover to cover every month. (Also AVN magazine, as well as Video store Magazine.)

I am somewhat biased though. I am a regular writer for each of the ones you mentioned.
But honestly, if you are serious about your business how could you NOT want to read about what's happening and possibly, just possibly learn something?
Kathee Brewer, the tech editor for AVNOnline writes a large portion of their articles. Not only is she incredibly smart, she knows how to write, and she knows how to write an instructive article that actually explains something in a way the layman can understand.

I'm a little offended by people that say they have no value. Sure, they have lots of ads. EVERY magazine has that. That's the way you can get a 200 page 4 color process paperback book delivered to your house for free every month. otherwise, it would cost you $30. Here's a trick; turn the page. But even the ads tell you something, don't they? The people that are running full multi-page ads every month, month after month, are apparently doing something right. Since they have the money to buy the ads. The smart business man would look at what they are doing and learn.

The foolish man looks at a closed book and says "awww there is nothing of value in that book. I know all I need from looking at the cover."