4 negatives here:
1- Dynafit is making a flagship boot like this without producing half sizes (they couple e.g. 27 &27.5 within a 1 cm shell range. So, jumping a size if you're a half measurment like me, it could suck and prevent you from using this boot. One recommendation is buying a size up and fitting a high volume Intuition liner for it)
2- The liner is brutal near the heal. So price-in the fact you'll be potentially buying an intuition liner
3-this new lightweight plastic is really soft and subject to marring, heavy gouges and scrapes whenever you come into contact with rocks. Dynafit should look at what Salomon is doing with their Pebax undersides.
4-the green rubber on the quickstep has a propensity to "tear" and chunks can come off. Mostly, it scuffs. A more durable rubber will help in future models, because the tech hardware of the AT binder is built into these pads, and replacing this every season can get expensive.
1-They're light, really light and fly up a boot pack and you'll last longer out there before your hip flexor or lungs are shot from 4,000+ hiking. Make sure you have a good liner and foot bed or foot pain and inflaming bone spurs will cut your day short. (I bet that 80% of the buyers for this boot are veterans and have wider feet from years of skiing in hard plastic boots. They need to widen the boot near the toe section
2-They're fairly stiff for their weight. I'm impressed with the flex, could be a touch stiffer. Make more of the cuff and overlap from carbon!
3-They handle chop, inbounds, side country, and obviously powder really nicely. But so does most boots. $875 for a boot shouldn't have more than 1 minor negative.
I'm trying a size larger. If they are still too narrow, I do not recommend.