I keep wearing this for hours on end because it fits so well. It's comfortable (out of the 6 cages I own it's by far the most comfy), it looks great, and is incredibly well made. The lock takes a bit of fiddling to get used to how it works and can be frustrating if the cage part is at any angle that the ring part doesn't like. It can pinch you a bit when you push the lock in, so be sure to push your skin down a bit before slamming it in there or you'll ouch yourself!
I like the belt that it comes with as well.