*This product has been discontinued. Check out our review of the Petzl GradiStep Etrier for going ultralight on free climbs that have short sections of aid climbing. For burly big wall aid climbing go to our Editors' Choice award winner the Yates Big Wall Ladder.
The Petzl Wall Step Etrier is an excellent choice for its comfort relative to its light weight and low bulk. In our big wall aider review it was our favorite aider for a mostly free wall such as The Nose of El Capitan. It is comfortable to stand in for the aid-intensive pitches, but light enough to forget about on the free climbing pitches. The only major downside is the price: it is much more expensive than any other aider we tested. We really hope Petzl makes a ladder aider with the same construction plus a spreader bar up top.
This is the highest scoring etrier-style aider. While the Yates Big Wall Ladder Aider is the best for aid-intensive walls, this is the best aider for walls that have lots of free climbing. If you are on a budget, get the Metolius 5 Step Aider because it is almost as good for free walls, better for aid-intensive walls, and is half the price. But if you want the best aider for The Nose or that style of big wall, get the Petzl Wall Step Etrier.