This is a great, lightweight boot. The range of motion in walk mode is awesome and the boot is really light for how stiff it is. I ski on a 107mm underfoot and this boot drives the ski just fine with a Dynafit binding. It's my first AT boot so I don't have a whole lot of comparison but my more experienced friends love the weight, features, and design. If you're looking for a side-country boot I'd go stiffer ie Mobe or Snookum. But this is a great boot for full-day or multi-day tours.
My only issue is a comfort one that might not affect other people. I had these boots custom fit but this issue isn't a liner/footbeed issue I don't think. I just can't seem to get the buckle above my arch to a comfortable setting, even with the micro-adjust. It's either too tight and hurts my feet or it's too loose and doesn't feel very secure. I seem to remember it on both uphill and downhill. I'll continue tweaking and try to remember to update this come winter. I have a higher than average arch but nothing crazy. Just a little higher than average.
Used with Volkl Nunataq and Dynafit bindings. 6'tall, 160-5 pounds with gear, and ski in the San Juans around Telluride