I hate to chime in on a brand I have never worn however I am very familiar with AKU mountaineering boots, as they are competitor to a boot brand I have done R&D for. They are an Italian headquartered and designed boot company that manufactures most of their boots in Romania to keep cost competitive. It has been several years since I had one in my hands but I do recall how impressed we were with the overall design. They were made well with double stitching, isolated lacing systems and correct Gortex liner construction. I would say they are on par with some of the other big Euro boot makers with very minor differences in materials and craftsmanship. I would put them well above , Salomon, Merrell, Vasque and - On par with Lowa, Salewa, Arcteryx, Asolo and - Below- La Sportiva and Scarpa.
Unfortunately we did not evaluate any of the mid or light hikers so I cant answer to fit or "toe box". I can however say from experience that most if not all Euro boot makers design their boots with a narrower "last" than other manufacturers and for good reason. Most people are accustomed to big comfortable shoes for daily wear and have not conditioned their feet to accept a narrower last fit for more demanding or even extreme use as typically experienced in mountaineering. The Euro boots are designed with narrow last in order to lock the whole foot in place throughout the entire last. A narrow last along with proper isolation of lacing with stiff soles will minimize neuroma trauma injuries to the nerves between the metatarsals.
I can only speak to my experience, conditioning and mindset of which I find that quality Euro mountaineering boots have left me with far fewer, foot, pronation and knee issues. . . Aku would be a brand I would consider for these reasons.