Hi There! :-)
I've been skiing since I was 6, and I raced in college. I've done 4 seasons as a ski instructor all 4 in custom foamed Strolz race flex boots. http://www.larryadler.com/strolz-racing-ski-boot-2012.html. I have wide feet and narrow ankles, and I've not found any "off the shelf boots" that have worked from a race perspective (Historically Lange have been close).
I'm not skiing anywhere close to as much as I used to (I'm currently running a software consultancy company in the city these days) so I've gone from skiing 100 days a season to skiing 15 days in a season.
I'm looking at replacing my Strolz customs with a softer more comfortable off the shelf boot, but getting a custom foamed liner to compliment these to deal with my narrow ankles. Not sure what shells to get to compliment a custom foam liner...
Would be great to get some suggestions for shells that would work for a setup like this! :-)