I've had a sub with them for about 3 years now. Content is a bit weak, but they're known more for the pictures. They do an Annual Photo Issue which makes me drool.
Their reviews are so-so, usually short and very to the point. The editors try to cover all aspects of mtn biking, but it's hard to make everyone happy.
To sum up: I'll resubscribe when it's time!
L8R
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"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming, "WOW, What a Ride!" - unknown
"Your Bike Sucks" - Sky Yaeger