- Familiarity: I've used it several times
I am a beginning to very intermediate climber, though I do lack confidence in the ability to trust my gear. As a less experienced climber, I found that this Smart Belay from Mammut is more intuitive to use than the Petzl GriGri. I was also much more comfortable using EITHER device than a traditional ATC. The neat thing about the Mammut Smart Belay is that it mimics the action of an ATC, but it gives you extra security in the event of a fall since it does lock up. When lowering I did like the brake feature on the GriGri better, but overall I think the simplicity of the Mammut device won me over. If I do decide to upgrade from my ATC, it would be to this Smart Belay Device. You also can't beat the price when comparing it to a GriGri which comes in around $100!