Brahman actually are not really known for their fast growth. They are actually one of the slowest maturing breeds out there. Purebred their temperaments are ok, but crosses are known for being a bit...crazy. If you intend to keep them pure that is one thing, but I do not suggest ever crossing them unless you have heavy duty equipment. We raised a lot of Brahman and Brahman crosses when we first got into cattle years and years ago. I can tell you a 200 lb Brahman cross calf can give an adult man a run for his money. They will fight you until they cannot fight anymore. We tried ear tagging and tattoo and group of about 20 heifers once. We never did get some of them done because they were that difficult to handle. Limousin had a bad rep for the temperament, but I can tell you they are puppy dogs compared to any of the Brahman crosses.