
the classification into Fancy Fur and Rex is not actually about whether you eat them, but the most important qualities in that breed.
In the main the Fancy Rqabbits are not red for their fine pelts but for shape or markings etc.
The fur rabbits are judge most on the quality of their coats which are varied and luxuriuous, but none are really kept as fur animals as such.
In fact the two most common breeds kept for Meat are classes under the Fur breeds section for shows (Californian and the New Zealand White).
The Rex really are a subdivision of Fur as originally there were just Fur and Fancy Rabbits. The Rex coat is a mutaion where the guard hairs are either totally asent or shorter than the dense undercoat . Breeders ahve imprioved the quality of the undercoat so it is really thick and fels like velvet. These breeds cannot cope with too much running aroudn on hard surfaces as without the guard hairs the fur can wear off their feet.
All Rabbit breeds make good eating, though there woudln't be too mcuh to eat on a Dwarf or Polish. :D
The Giant brees do not make economical meat rabbits as it takes too long for them to grow, and whiel young the proportion of meat to bone will not be sufficient.
The idea meat Rabbit should weigh more than half it's live weight once dressed out, and shoudl reach this ideal proportion of flesh to bone weight in under 12 weeks, and be about 4 pounds in live weight.