Size 13-14-15 shoes/booties !!!!!!
You guys don't need fins .... your feet are big enough. The size they're at, they should propel you through the water juuuuuust fine. 
All kidding aside, I'll swear by the MARES Quattros. Although a little bit more expensive that rocket's, MARES does make an XL for large feet.
Also check out the Cressi Sub Frog's. A little stiffer than the quattros (I used these for my technical dives ... wrecks, caverns, caves, ect), but not as expensive as the quattros.
Hope this helps.
