There's a genetic component to sore hocks too (genetics control the thickness & strength of foot fur, the foot size, the temperament of the rabbit, all which control how likely it is to get sore hocks). Wire floors aren't as common in NZ, but I'd still try hard to find ones who family & relatives all have perfect foot bottoms - no missing fur or signs of sore hocks. They're less hormonal than mini lops and easier to groom (their fur doesn't mat or collect feces in it easily), but they are much larger (in America, our mini lops are bigger than yours, so American mini lops are closer in size to rex), and eat more. They also don't get teeth problems as easily as BRC mini lops, and have larger litters - except for sore hocks they are generally a healthy breed.