[gagners]

ATCs are great for ANY length rappel without kinking the rope, whether it's 50ft or 300ft, which means less kit to carry.

I have used the munter as a belay "device" as well, but you can rig an ATC to be self-locking from the top, allowing you to belay a follow-on climber or lower someone while doing things like prepping for the next pitch, or more tactically, pulling top-side security.