I've been looking around myself. I currently have Hot Bike, Hot Bike's Baggers, and American Rider. Hot Bike was very informative. Has some how-to's, some custom stuff, evaluations, and some reader's rides. I am new to the Harley scene myself so I am sure some more knowledgable folks than I will chime in here. Thanks for asking the question, I will be watching this one myself.
I take 3 right now, American Bagger is my #1 followed by American Iron, Hot Bike, i'll let Hot Bike run out. Keep American Bagger , lots of tech and goooooood reading.