New for 2011, Petzl created the Grigri 2 Belay Device to be 25% smaller, 20% lighter, and even more user-friendly that its original GriGri device. Although the Grigri 2 loads and functions like any other belay device, its descent control handle lets you gradually lower your partner with a supreme smoothness and minimal effort.Durable stainless steel cam and friction plates stand up to years of useEasy-to-read diagrams on the aluminum side plates help you make sure you^re set up correctlyAssisted braking system helps slow your partner^s fall when he skips one clip and botches the nextBrake handle gives you excellent control during the descentDesigned to accommodate rope diameters between 8.9 and 11 millimeters; ideal rope diameters are between 9.4 to 10.3 millimeters
Bottom Line: Smaller + lighter + simpler = better.