Sorry CALM pythons I just saw your comment . As far as differences some of the stuff that I have noticed is first off roxys feeding response is much much higher then the burms, she also is a lot more active and quick once out of her enclosure but temperament is not an issue at all she has yet to even hiss at me. As far as growth it’s hard for me to chime in on that since I’ve only had her since may but she seems to be staying on the thinner side and about 4-5 ft so far