I've been getting Rider magazine, but it seems to be more of a 'wow, that's cool' kinda thing to get me through winter than much of anything else. Most of their Bike previews/reviews are what i've already seen on the internet.
They do have some cool ride reports though.
Also, their tech section seems to be really good.
I like "Sport Rider", "Motorcylist", and "Superbike" (uk). Sport rider seems to be the most interesting with proper reviews and articles on technique. And Keith code's articles in motorcyclist are always an interesting read.