Edelrid Eddy

The Eddy, a rather heavy bugger at 12.4 ounces (Grigri 2 is 5.9 ounces), will also lock if the user pulls the lever all the way back. This eliminates the risk of the belayer dropping you because he freaked and yarded on the lever. I found this feature especially annoying, and even superfluous to safety. It makes the lever's range of arc that unlocks the cam extremely small -- you have to pull it back just right in order to lower your partner.
To sum up, the Eddy is okay. It will catch and lower any climber—even on, thank god, ropes down to 9 millimeters! However, compared to the no nonsense Grigri 2, I found the Eddy difficult to use.