Very good move by ALTRA with this new version. Very good shoe. Midsole that provides a faster feel on the trail and a more pronounced rocker that helps with faster paces. Incredible Vibram outsole that has never disappointed me on the mountain even on wet rocks and has held up after crazy abuse (about 600 km including rough terrain and after being retired, daily use). It doesn't have ALTRA's spacious toebox (unfortunately) but even so, the average runner will find it quite comfortable. In the midfoot, it holds quite firmly so even at 29mm, you will find it quite stable without tipping. The only downside is the quality of the outer mesh which showed wear quite quickly. Nevertheless, the sock never showed through because it has another layer inside like fabric. Overall, I would recommend it as an alternative to a more comfortable trail shoe, which is still zero drop but supports faster paces.