From what I can gather so far here's a short list of candidates. The problem as Mike pointed out in an earlier post is that it really helps to try them on. It's hard to find a local place with any king of selection of Sidis. let alone Daytonas.
They are probably listed in ascending order of $$$. Larry
Sidi - You could visit the Sidi site, but it's cumbersome at best. The link below is from a vendor, but provides the necessary info.
http://www.motorcyclegear.com/street/boots/waterproof_sport_street_touring_boots/sidi/way_mega_wide_rain_motorcycle_boots.html
Daytona - In addition to the wide option, they also make boots for women -that made my wife smile -
http://www.daytona.de/english/boots_e/gore/1_roadstargtx.html
Altberg Bootmakers made in England - so you won't able to try them on without a long trip -
http://www.altberg.co.uk/Web/motorcycle.jsp