My favorite boot is one that fits my horse's movement. Sometimes hooves in rehab have trims that are still "in process" in terms of toe length.  My suggestions is to measure that hoof at least 3 times. Trace it on a piece of white paper and double check the measurements from the manufacturers you like. Then look for a boot that will fit with the kind of padding you think is needed. 

While I boot in Easyboot Trails for hoof pain --with only the thinnest gel pads-- for Cayuse, Renegades are the only boots to hug the hoof and never rotate in work. They can be custom-ordered with padding, but I wouldn't say they offer a lot of cushioning. 
--
Cass, Sonoma Co., CA 2012
ECIR Group Moderator
Cayuse and Diamond Case History Folder                
Cayuse Photos                Diamond Photos