Four years ago, I asked this same question here on EpicSki: What boots are best for my feet, very low volume heel/ankle, average forefoot, stupidly high instep.
The response from this forum then was to consider the 95mm Nordica Dobermann Aggressor WC 150, which has been my boot ever since, without question the best boots I've ever skied, replacing my previous Tecnica XT-17's - except that the Dobermann's are just too stiff, even after cutting out the saddle cuts which are supposed to reduce the flex to 130.
I would like to raise this same question again in light of new boot offerings, given that I wish to gather preliminary information to be followed up by a visit this spring, summer or fall to a Tahoe area bootfitter for final analysis and purchase.
The '09 Aggressor required only two mods: Grinding out the "sixth toe" and creating more instep room with tongue modification. After four seasons, I still cannot fasten the instep buckle on the right foot, which is shorter and higher than the left foot. In fact, I've removed the instep buckle entirely.
In prior seasons of hopeless abandon I've tried the Atomic RT CS 110 Boot, which had a marvelous flex pattern, absurdly high volume heel/ankle, and ridiculously low instep. In fact, the liners from those boots have replaced the original liners in my '06 Head RS 96 boots, which I currently use for teaching. And that combination requires double thick liner heel wraps.
First in line of consideration is the new Nordica WC EDT 130, but I understand this boot has less instep room than the '09 Aggressor. I require more, and cannot do with less, instep room. I also want a warm boot, thus an aluminum boot board is OUT.
Before I bought the WC 150, I tried the 98 mm last Dobermann Pro 130, but from my perspective I would rather ski in a loafer than this high volume boot.
I look forward to and appreciate your kind responses, but I must confess to holding an Ace: Salomon SX 91 Equipe's in my size from the local thrift shop ($5) Solid heel hold, adjustable flex, barely worn, almost perfect but dang again to tight about the instep.