reverso or atc guide? does the different orientation of the guide ring make a difference when belaying from above? or is it all the same and i should just go with the
REVERSO®, Versatile, lightweight belay/rappel device, for use with one or two rope strands and ability to belay a second climber from the anchor - Petzl USA
Reverso Vs. Old-style ATC Guide
Review: DMM Pivot Belay Device - Black Sheep Adventure Sports