If you recognize the limitations of aluminum crampons, you will be happy with the performance of these Grivels. Just returned from Rainier, and I loved not carrying a heavy set to high camp. My route had no rock (I knew in advance there would be little to none). Turns out there was also very little hard ice, and none at much of an angle.
They performed flawlessly on this climb. The anti-balling plates did their thing - not a single curse or ice axe tap necessary. As stated by an earlier reviewer, these will now always find their way into my early season day pack as well.
One minor caution - I found the absolute limit of the adjustment range with a size 11 Koflach Arctis Expe. Boot sole length is almost 34 cm, and even with removing the quick adjust to gain the last bit of range I had to push hard and wiggle the boots into the bindings.

I purchased these, snapped a tooth off climbing Rainier and a second tooth snapped off while climbing Pico. They may be light, but they aren't built to take on heavy duty climbing on ice.

I used the Air Tech Light Crampons climbing Mt. Hood and Mt. Shasta June 2006. They worked great. They have shorter, wider, and less sharp spikes, making them easier to carry and walk in and less likely to catch a gaiter, damage your rope, or poke you while handling them. The New-Matic fit works the same as the steel crampons, providing a solid fit. We climbed at night, and the ice was frozen nieve with rime ice near the summits, and they worked well front pointing the steeper sections on Mt. Hood. They don't seem as sharp as their steel counter parts, but I feel they would work well on water ice. While descending Shasta from Lake Helen in the blazing sun, they didn't ball up, partly due to the new anti-ball tubes covering the rail between the toe and heal sections. These will be my first and possibly only crampon choice.

I've used the air tech light to climb the Catskill High Peaks...Slide, Hunter and Wittenberg this Winter and this crampon is all that Grivel claims it to be and more.Easy to carry...so light that it has become standard in my back pack all Winter. I would recommend this crampon to anyone tackling New Yorks High Peaks in Winter.